Symbol Duration

14,000,000 Leading Edge Experts on the ideXlab platform

Scan Science and Technology

Contact Leading Edge Experts & Companies

Scan Science and Technology

Contact Leading Edge Experts & Companies

The Experts below are selected from a list of 3267 Experts worldwide ranked by ideXlab platform

Eduard A. Jorswieck - One of the best experts on this subject based on the ideXlab platform.

  • Non-Uniform BCSK Modulation in Nutrient Limited Molecular Communication System: Optimization and Performance Evaluation
    arXiv: Signal Processing, 2019
    Co-Authors: Hamid Khoshfekr Rudsari, Orooji, Mohammad Javan, Nader Mokari, Eduard A. Jorswieck
    Abstract:

    In this paper, a novel non-uniform Binary Concentration Shift Keying (BCSK) modulation in the course of molecular communication is introduced. We consider the nutrient limiting as the main reason for avoiding the nanotransmitters to release huge number of molecules at once. The solution of this problem is in the utilization of the BCSK modulation. In this scheme, nanotransmitter releases the information molecules non-uniformly during the time slot. To boost the bit error rate (BER) performance, we consider a relay-assisted molecular communication via diffusion. Our computations demonstrate how the pulse shape of BCSK modulation affects the BER, and we also derive the energy of non-uniform BCSK in the closed-form expression. We study the parameters that can affect the BER performance, in particular the distance between the nanotransmitter and the nanoreceiver, the drift velocity of the medium, and the Symbol Duration. Furthermore, we propose an optimization problem that is designed to find the optimal Symbol Duration value that maximizes the number of successful received bits. The proposed algorithm to solve the optimization problem is based on the bisection method. The analytical results show that non-uniform BCSK modulation outperforms uniform BCSK modulation in BER performance, when the aggregate energy is fixed.

  • Non-Uniform BCSK Modulation in Nutrient-Limited Relay-Assisted Molecular Communication System: Optimization and Performance Evaluation
    arXiv: Signal Processing, 2019
    Co-Authors: Hamid Khoshfekr Rudsari, Orooji, Mohammad Javan, Nader Mokari, Eduard A. Jorswieck
    Abstract:

    In this paper, a novel non-uniform Binary Concentration Shift Keying (BCSK) modulation in the course of molecular communication is introduced. We consider the nutrient limiting as the main reason for avoiding the nanotransmitters to release huge number of molecules at once. The solution of this problem is in the utilization of the BCSK modulation. In this scheme, nanotransmitter releases the information molecules non-uniformly during the time slot. The 3-dimensional diffusion channel with 3-dimensional drift is considered in this paper. To boost the bit error rate (BER) performance, we consider a relay-assisted molecular communication via diffusion. Our computations demonstrate how the pulse shape of BCSK modulation affects the BER, and we also derive the energy consumption of non-uniform BCSK in the closed-form expression. We study the parameters that can affect the BER performance, in particular the distance between the nanotransmitter and the nanoreceiver, the drift velocity of the medium, and the Symbol Duration. Furthermore, we propose an optimization problem that is designed to find the optimal Symbol Duration value that maximizes the number of successful received bits. The proposed algorithm to solve the optimization problem is based on the bisection method. The analytical results show that non-uniform BCSK modulation outperforms uniform BCSK modulation in BER performance, when the aggregate energy is fixed.

  • End-to-End Performance Optimization in Hybrid Molecular and Electromagnetic Communications.
    arXiv: Information Theory, 2019
    Co-Authors: Ali Momeni, Nader Mokari, Mohammad Javan, Eduard A. Jorswieck, Orooji
    Abstract:

    Telemedicine refers to the use of information and communication technology to assist with medical information and services. In health care applications, high reliable communication links between the health care provider and the desired destination in the human body play a central role in designing end-to-end (E2E) telemedicine system. In the advanced health care applications, $\text{e.g.}$ drug delivery, molecular communication becomes a major building block in bio-nano-medical applications. In this paper, an E2E communication link consisting of the electromagnetic and the molecular link is investigated. This paradigm is crucial when the body is a part of the communication system. Based on the quality of service (QoS) metrics, we present a closed-form expression for the E2E BER of the combination of molecular and wireless electromagnetic communications. \textcolor{black}{ Next, we formulate an optimization problem with the aim of minimizing the E2E BER of the system to achieve the optimal Symbol Duration for EC and DMC regarding the imposing delivery time from telemedicine services.} The proposed problem is solved by an iterative algorithm based on the bisection method. Also, we study the impact of the system parameters, including drift velocity, detection threshold at the receiver in molecular communication, on the performance of the system. Numerical results show that the proposed method obtains the minimum E2E bit error probability by selecting an appropriate Symbol Duration of electromagnetic and molecular communications.

Hamid Khoshfekr Rudsari - One of the best experts on this subject based on the ideXlab platform.

  • Non-Uniform BCSK Modulation in Nutrient Limited Molecular Communication System: Optimization and Performance Evaluation
    arXiv: Signal Processing, 2019
    Co-Authors: Hamid Khoshfekr Rudsari, Orooji, Mohammad Javan, Nader Mokari, Eduard A. Jorswieck
    Abstract:

    In this paper, a novel non-uniform Binary Concentration Shift Keying (BCSK) modulation in the course of molecular communication is introduced. We consider the nutrient limiting as the main reason for avoiding the nanotransmitters to release huge number of molecules at once. The solution of this problem is in the utilization of the BCSK modulation. In this scheme, nanotransmitter releases the information molecules non-uniformly during the time slot. To boost the bit error rate (BER) performance, we consider a relay-assisted molecular communication via diffusion. Our computations demonstrate how the pulse shape of BCSK modulation affects the BER, and we also derive the energy of non-uniform BCSK in the closed-form expression. We study the parameters that can affect the BER performance, in particular the distance between the nanotransmitter and the nanoreceiver, the drift velocity of the medium, and the Symbol Duration. Furthermore, we propose an optimization problem that is designed to find the optimal Symbol Duration value that maximizes the number of successful received bits. The proposed algorithm to solve the optimization problem is based on the bisection method. The analytical results show that non-uniform BCSK modulation outperforms uniform BCSK modulation in BER performance, when the aggregate energy is fixed.

  • Non-Uniform BCSK Modulation in Nutrient-Limited Relay-Assisted Molecular Communication System: Optimization and Performance Evaluation
    arXiv: Signal Processing, 2019
    Co-Authors: Hamid Khoshfekr Rudsari, Orooji, Mohammad Javan, Nader Mokari, Eduard A. Jorswieck
    Abstract:

    In this paper, a novel non-uniform Binary Concentration Shift Keying (BCSK) modulation in the course of molecular communication is introduced. We consider the nutrient limiting as the main reason for avoiding the nanotransmitters to release huge number of molecules at once. The solution of this problem is in the utilization of the BCSK modulation. In this scheme, nanotransmitter releases the information molecules non-uniformly during the time slot. The 3-dimensional diffusion channel with 3-dimensional drift is considered in this paper. To boost the bit error rate (BER) performance, we consider a relay-assisted molecular communication via diffusion. Our computations demonstrate how the pulse shape of BCSK modulation affects the BER, and we also derive the energy consumption of non-uniform BCSK in the closed-form expression. We study the parameters that can affect the BER performance, in particular the distance between the nanotransmitter and the nanoreceiver, the drift velocity of the medium, and the Symbol Duration. Furthermore, we propose an optimization problem that is designed to find the optimal Symbol Duration value that maximizes the number of successful received bits. The proposed algorithm to solve the optimization problem is based on the bisection method. The analytical results show that non-uniform BCSK modulation outperforms uniform BCSK modulation in BER performance, when the aggregate energy is fixed.

Mohammad Javan - One of the best experts on this subject based on the ideXlab platform.

  • Non-Uniform BCSK Modulation in Nutrient Limited Molecular Communication System: Optimization and Performance Evaluation
    arXiv: Signal Processing, 2019
    Co-Authors: Hamid Khoshfekr Rudsari, Orooji, Mohammad Javan, Nader Mokari, Eduard A. Jorswieck
    Abstract:

    In this paper, a novel non-uniform Binary Concentration Shift Keying (BCSK) modulation in the course of molecular communication is introduced. We consider the nutrient limiting as the main reason for avoiding the nanotransmitters to release huge number of molecules at once. The solution of this problem is in the utilization of the BCSK modulation. In this scheme, nanotransmitter releases the information molecules non-uniformly during the time slot. To boost the bit error rate (BER) performance, we consider a relay-assisted molecular communication via diffusion. Our computations demonstrate how the pulse shape of BCSK modulation affects the BER, and we also derive the energy of non-uniform BCSK in the closed-form expression. We study the parameters that can affect the BER performance, in particular the distance between the nanotransmitter and the nanoreceiver, the drift velocity of the medium, and the Symbol Duration. Furthermore, we propose an optimization problem that is designed to find the optimal Symbol Duration value that maximizes the number of successful received bits. The proposed algorithm to solve the optimization problem is based on the bisection method. The analytical results show that non-uniform BCSK modulation outperforms uniform BCSK modulation in BER performance, when the aggregate energy is fixed.

  • Non-Uniform BCSK Modulation in Nutrient-Limited Relay-Assisted Molecular Communication System: Optimization and Performance Evaluation
    arXiv: Signal Processing, 2019
    Co-Authors: Hamid Khoshfekr Rudsari, Orooji, Mohammad Javan, Nader Mokari, Eduard A. Jorswieck
    Abstract:

    In this paper, a novel non-uniform Binary Concentration Shift Keying (BCSK) modulation in the course of molecular communication is introduced. We consider the nutrient limiting as the main reason for avoiding the nanotransmitters to release huge number of molecules at once. The solution of this problem is in the utilization of the BCSK modulation. In this scheme, nanotransmitter releases the information molecules non-uniformly during the time slot. The 3-dimensional diffusion channel with 3-dimensional drift is considered in this paper. To boost the bit error rate (BER) performance, we consider a relay-assisted molecular communication via diffusion. Our computations demonstrate how the pulse shape of BCSK modulation affects the BER, and we also derive the energy consumption of non-uniform BCSK in the closed-form expression. We study the parameters that can affect the BER performance, in particular the distance between the nanotransmitter and the nanoreceiver, the drift velocity of the medium, and the Symbol Duration. Furthermore, we propose an optimization problem that is designed to find the optimal Symbol Duration value that maximizes the number of successful received bits. The proposed algorithm to solve the optimization problem is based on the bisection method. The analytical results show that non-uniform BCSK modulation outperforms uniform BCSK modulation in BER performance, when the aggregate energy is fixed.

  • End-to-End Performance Optimization in Hybrid Molecular and Electromagnetic Communications.
    arXiv: Information Theory, 2019
    Co-Authors: Ali Momeni, Nader Mokari, Mohammad Javan, Eduard A. Jorswieck, Orooji
    Abstract:

    Telemedicine refers to the use of information and communication technology to assist with medical information and services. In health care applications, high reliable communication links between the health care provider and the desired destination in the human body play a central role in designing end-to-end (E2E) telemedicine system. In the advanced health care applications, $\text{e.g.}$ drug delivery, molecular communication becomes a major building block in bio-nano-medical applications. In this paper, an E2E communication link consisting of the electromagnetic and the molecular link is investigated. This paradigm is crucial when the body is a part of the communication system. Based on the quality of service (QoS) metrics, we present a closed-form expression for the E2E BER of the combination of molecular and wireless electromagnetic communications. \textcolor{black}{ Next, we formulate an optimization problem with the aim of minimizing the E2E BER of the system to achieve the optimal Symbol Duration for EC and DMC regarding the imposing delivery time from telemedicine services.} The proposed problem is solved by an iterative algorithm based on the bisection method. Also, we study the impact of the system parameters, including drift velocity, detection threshold at the receiver in molecular communication, on the performance of the system. Numerical results show that the proposed method obtains the minimum E2E bit error probability by selecting an appropriate Symbol Duration of electromagnetic and molecular communications.

Nader Mokari - One of the best experts on this subject based on the ideXlab platform.

  • Non-Uniform BCSK Modulation in Nutrient Limited Molecular Communication System: Optimization and Performance Evaluation
    arXiv: Signal Processing, 2019
    Co-Authors: Hamid Khoshfekr Rudsari, Orooji, Mohammad Javan, Nader Mokari, Eduard A. Jorswieck
    Abstract:

    In this paper, a novel non-uniform Binary Concentration Shift Keying (BCSK) modulation in the course of molecular communication is introduced. We consider the nutrient limiting as the main reason for avoiding the nanotransmitters to release huge number of molecules at once. The solution of this problem is in the utilization of the BCSK modulation. In this scheme, nanotransmitter releases the information molecules non-uniformly during the time slot. To boost the bit error rate (BER) performance, we consider a relay-assisted molecular communication via diffusion. Our computations demonstrate how the pulse shape of BCSK modulation affects the BER, and we also derive the energy of non-uniform BCSK in the closed-form expression. We study the parameters that can affect the BER performance, in particular the distance between the nanotransmitter and the nanoreceiver, the drift velocity of the medium, and the Symbol Duration. Furthermore, we propose an optimization problem that is designed to find the optimal Symbol Duration value that maximizes the number of successful received bits. The proposed algorithm to solve the optimization problem is based on the bisection method. The analytical results show that non-uniform BCSK modulation outperforms uniform BCSK modulation in BER performance, when the aggregate energy is fixed.

  • Non-Uniform BCSK Modulation in Nutrient-Limited Relay-Assisted Molecular Communication System: Optimization and Performance Evaluation
    arXiv: Signal Processing, 2019
    Co-Authors: Hamid Khoshfekr Rudsari, Orooji, Mohammad Javan, Nader Mokari, Eduard A. Jorswieck
    Abstract:

    In this paper, a novel non-uniform Binary Concentration Shift Keying (BCSK) modulation in the course of molecular communication is introduced. We consider the nutrient limiting as the main reason for avoiding the nanotransmitters to release huge number of molecules at once. The solution of this problem is in the utilization of the BCSK modulation. In this scheme, nanotransmitter releases the information molecules non-uniformly during the time slot. The 3-dimensional diffusion channel with 3-dimensional drift is considered in this paper. To boost the bit error rate (BER) performance, we consider a relay-assisted molecular communication via diffusion. Our computations demonstrate how the pulse shape of BCSK modulation affects the BER, and we also derive the energy consumption of non-uniform BCSK in the closed-form expression. We study the parameters that can affect the BER performance, in particular the distance between the nanotransmitter and the nanoreceiver, the drift velocity of the medium, and the Symbol Duration. Furthermore, we propose an optimization problem that is designed to find the optimal Symbol Duration value that maximizes the number of successful received bits. The proposed algorithm to solve the optimization problem is based on the bisection method. The analytical results show that non-uniform BCSK modulation outperforms uniform BCSK modulation in BER performance, when the aggregate energy is fixed.

  • End-to-End Performance Optimization in Hybrid Molecular and Electromagnetic Communications.
    arXiv: Information Theory, 2019
    Co-Authors: Ali Momeni, Nader Mokari, Mohammad Javan, Eduard A. Jorswieck, Orooji
    Abstract:

    Telemedicine refers to the use of information and communication technology to assist with medical information and services. In health care applications, high reliable communication links between the health care provider and the desired destination in the human body play a central role in designing end-to-end (E2E) telemedicine system. In the advanced health care applications, $\text{e.g.}$ drug delivery, molecular communication becomes a major building block in bio-nano-medical applications. In this paper, an E2E communication link consisting of the electromagnetic and the molecular link is investigated. This paradigm is crucial when the body is a part of the communication system. Based on the quality of service (QoS) metrics, we present a closed-form expression for the E2E BER of the combination of molecular and wireless electromagnetic communications. \textcolor{black}{ Next, we formulate an optimization problem with the aim of minimizing the E2E BER of the system to achieve the optimal Symbol Duration for EC and DMC regarding the imposing delivery time from telemedicine services.} The proposed problem is solved by an iterative algorithm based on the bisection method. Also, we study the impact of the system parameters, including drift velocity, detection threshold at the receiver in molecular communication, on the performance of the system. Numerical results show that the proposed method obtains the minimum E2E bit error probability by selecting an appropriate Symbol Duration of electromagnetic and molecular communications.

Gary J. Saulnier - One of the best experts on this subject based on the ideXlab platform.

  • An adaptive soft output demodulator for low BT GMSK signals
    Proceedings IEEE 56th Vehicular Technology Conference, 1
    Co-Authors: Gary J. Saulnier
    Abstract:

    This paper investigates a convolutional-coded system with GMSK signaling where the bandwidth-time product (BT) value is much smaller than the value used in most previous research. An adaptive soft output demodulator is proposed. Significant complexity reduction is achieved without performance loss, by using differential precoding, the Laurent (1986) signal representation and sampling the received Symbols at the end of the Symbol Duration. The performance of the demodulator is studied in AWGN and slow flat Rayleigh fading channels through simulations.

  • An adaptive soft output GMSK demodulator over MUOS narrowband flat scintillation channels
    MILCOM 2002. Proceedings, 1
    Co-Authors: A. Seyedi, Gary J. Saulnier
    Abstract:

    The signal scintillation effects at UHF represent a significant design challenge for the future military mobile user objective system (MUOS) satellite communications. An adaptive soft output demodulator for GMSK signaling with very small value is investigated in MUOS narrowband applications. Without any performance loss, significant complexity reduction is achieved by using differential precoding, the Laurent (1986) signal representation and sampling the received Symbols at the end of the Symbol Duration. The performance of the GMSK demodulator over six typical MUOS flat scintillation channels, particularly over the worst-case scintillation channel among them, are studied through simulations in both uncoded and convolutional coded systems.