The Experts below are selected from a list of 322848 Experts worldwide ranked by ideXlab platform
Jin Ho Choi - One of the best experts on this subject based on the ideXlab platform.
-
Structured Design of a 288 tap fir filter by optimized partial product tree compression
IEEE Journal of Solid-state Circuits, 1997Co-Authors: Jun Rim Choi, Lak Hyun Jang, Seong Wook Jung, Jin Ho ChoiAbstract:A compact 10-b, 288-tap finite impulse response (FIR) filter is Designed by adopting Structured architecture that employs an optimized partial product tree compression method. The new scheme is based on the addition of equally weighted partial products resulted from 288 multiplications of the filter coefficients and the inputs. The 288 multiplication and 287 addition operations are decomposed to add 1440 partial products and the sign extension operations are manipulated independently to ensure the operation at 72 MHz, the internal clock frequency generated by the integrated phase-locked loop (PLL) clock multiplier. In addition to the optimized transmission gate full adder, modified carry save compression circuits such as 4:2 and 5:5:2 compressors are used to perform decomposed partial product addition. This Structured approach enables cascade Design that requires more than 288-tap FIR filtering. The completed 288-tap FIR fitter core occupies 5.36/spl times/7.29 mm/sup 2/ of silicon area that consists of 371732 transistors in 0.6-/spl mu/m triple-metal CMOS technology, and it consumes only 0.8 W of average power at 3.3 V.
-
Structured Design of a 288 tap fir filter by optimized partial product tree compression
Custom Integrated Circuits Conference, 1996Co-Authors: Jun Rim Choi, Lak Hyun Jang, Seong Wook Jeong, Jin Ho ChoiAbstract:A compact 10-bit, 288-tap FIR filter is Designed by adopting Structured architecture which employs optimized partial product tree compression method. The new architecture is based on the addition of equally weighted partial products which result from 288 multiplications of the filter coefficients and the inputs. The 288 multiplication and 287 addition operations are decomposed to add 1440 partial products to meet the tight timing requirement. Optimized parallel compression schemes such as 4:2 and 5:5:2 compressors are used to perform decomposed partial product addition. The completed 288-tap FIR filter occupies 7/spl times/9 mm/sup 2/ of silicon area which consists of 385754 transistors in 0.6 /spl mu/m triple-metal CMOS technology.
Boulat A Bash - One of the best experts on this subject based on the ideXlab platform.
-
infinite fold enhancement in communications capacity using pre shared entanglement
International Symposium on Information Theory, 2020Co-Authors: Saikat Guha, Quntao Zhuang, Boulat A BashAbstract:Pre-shared entanglement can significantly boost communication rates in the regime of high thermal noise, and a low-brightness transmitter. In this regime, the ratio between the entanglement-assisted capacity and the Holevo capacity, the maximum reliable-communication rate permitted by quantum mechanics without any pre-shared entanglement as a resource, is known to scale as $\log (1/{\bar N_S})$, where ${\bar N_{\text{S}}} \ll 1$ is the mean transmitted photon number per mode. This is especially promising in enabling a large boost to radio-frequency communications in the weak-transmit-power regime, by exploiting pre-shared optical-frequency entanglement, e.g., distributed by the quantum internet. In this paper, we propose a Structured Design of a quantum transmitter and receiver that leverages continuous-variable pre-shared entanglement from a downconversion source, which can harness this purported infinite-fold capacity enhancement— a problem that has been open for over a decade. Its implication to the breaking of the well-known square root law for covert communications, with entanglement assistance, is discussed.
-
infinite fold enhancement in communications capacity using pre shared entanglement
arXiv: Quantum Physics, 2020Co-Authors: Saikat Guha, Quntao Zhuang, Boulat A BashAbstract:Pre-shared entanglement can significantly boost communication rates in the regime of high thermal noise, and a low-brightness transmitter. In this regime, the ratio between the entanglement-assisted capacity and the Holevo capacity, the maximum reliable-communication rate permitted by quantum mechanics without any pre-shared entanglement as a resource, is known to scale as $\log(1/N_S)$, where $N_S \ll 1$ is the mean transmitted photon number per mode. This is especially promising in enabling a large boost to radio-frequency communications in the weak-transmit-power regime, by exploiting pre-shared optical-frequency entanglement, e.g., distributed by the quantum internet. In this paper, we propose a Structured Design of a quantum transmitter and receiver that leverages continuous-variable pre-shared entanglement from a downconversion source, which can harness this purported infinite-fold capacity enhancement---a problem open for over a decade. Finally, the implication of this result to the breaking of the well-known {\em square-root law} for covert communications, with pre-shared entanglement assistance, is discussed.
Jun Rim Choi - One of the best experts on this subject based on the ideXlab platform.
-
Structured Design of a 288 tap fir filter by optimized partial product tree compression
IEEE Journal of Solid-state Circuits, 1997Co-Authors: Jun Rim Choi, Lak Hyun Jang, Seong Wook Jung, Jin Ho ChoiAbstract:A compact 10-b, 288-tap finite impulse response (FIR) filter is Designed by adopting Structured architecture that employs an optimized partial product tree compression method. The new scheme is based on the addition of equally weighted partial products resulted from 288 multiplications of the filter coefficients and the inputs. The 288 multiplication and 287 addition operations are decomposed to add 1440 partial products and the sign extension operations are manipulated independently to ensure the operation at 72 MHz, the internal clock frequency generated by the integrated phase-locked loop (PLL) clock multiplier. In addition to the optimized transmission gate full adder, modified carry save compression circuits such as 4:2 and 5:5:2 compressors are used to perform decomposed partial product addition. This Structured approach enables cascade Design that requires more than 288-tap FIR filtering. The completed 288-tap FIR fitter core occupies 5.36/spl times/7.29 mm/sup 2/ of silicon area that consists of 371732 transistors in 0.6-/spl mu/m triple-metal CMOS technology, and it consumes only 0.8 W of average power at 3.3 V.
-
Structured Design of a 288 tap fir filter by optimized partial product tree compression
Custom Integrated Circuits Conference, 1996Co-Authors: Jun Rim Choi, Lak Hyun Jang, Seong Wook Jeong, Jin Ho ChoiAbstract:A compact 10-bit, 288-tap FIR filter is Designed by adopting Structured architecture which employs optimized partial product tree compression method. The new architecture is based on the addition of equally weighted partial products which result from 288 multiplications of the filter coefficients and the inputs. The 288 multiplication and 287 addition operations are decomposed to add 1440 partial products to meet the tight timing requirement. Optimized parallel compression schemes such as 4:2 and 5:5:2 compressors are used to perform decomposed partial product addition. The completed 288-tap FIR filter occupies 7/spl times/9 mm/sup 2/ of silicon area which consists of 385754 transistors in 0.6 /spl mu/m triple-metal CMOS technology.
Saikat Guha - One of the best experts on this subject based on the ideXlab platform.
-
infinite fold enhancement in communications capacity using pre shared entanglement
International Symposium on Information Theory, 2020Co-Authors: Saikat Guha, Quntao Zhuang, Boulat A BashAbstract:Pre-shared entanglement can significantly boost communication rates in the regime of high thermal noise, and a low-brightness transmitter. In this regime, the ratio between the entanglement-assisted capacity and the Holevo capacity, the maximum reliable-communication rate permitted by quantum mechanics without any pre-shared entanglement as a resource, is known to scale as $\log (1/{\bar N_S})$, where ${\bar N_{\text{S}}} \ll 1$ is the mean transmitted photon number per mode. This is especially promising in enabling a large boost to radio-frequency communications in the weak-transmit-power regime, by exploiting pre-shared optical-frequency entanglement, e.g., distributed by the quantum internet. In this paper, we propose a Structured Design of a quantum transmitter and receiver that leverages continuous-variable pre-shared entanglement from a downconversion source, which can harness this purported infinite-fold capacity enhancement— a problem that has been open for over a decade. Its implication to the breaking of the well-known square root law for covert communications, with entanglement assistance, is discussed.
-
infinite fold enhancement in communications capacity using pre shared entanglement
arXiv: Quantum Physics, 2020Co-Authors: Saikat Guha, Quntao Zhuang, Boulat A BashAbstract:Pre-shared entanglement can significantly boost communication rates in the regime of high thermal noise, and a low-brightness transmitter. In this regime, the ratio between the entanglement-assisted capacity and the Holevo capacity, the maximum reliable-communication rate permitted by quantum mechanics without any pre-shared entanglement as a resource, is known to scale as $\log(1/N_S)$, where $N_S \ll 1$ is the mean transmitted photon number per mode. This is especially promising in enabling a large boost to radio-frequency communications in the weak-transmit-power regime, by exploiting pre-shared optical-frequency entanglement, e.g., distributed by the quantum internet. In this paper, we propose a Structured Design of a quantum transmitter and receiver that leverages continuous-variable pre-shared entanglement from a downconversion source, which can harness this purported infinite-fold capacity enhancement---a problem open for over a decade. Finally, the implication of this result to the breaking of the well-known {\em square-root law} for covert communications, with pre-shared entanglement assistance, is discussed.
Almudever, Carmen G. - One of the best experts on this subject based on the ideXlab platform.
-
Will Quantum Computers Scale without Inter-Chip Comms? A Structured Design Exploration to the Monolithic vs Distributed Architectures Quest
'Institute of Electrical and Electronics Engineers (IEEE)', 2020Co-Authors: Rodrigo Santiago, Abadal Sergi, Alarcon Eduard, Almudever, Carmen G.Abstract:Being a very promising technology, with impressive advances in the recent years, it is still unclear how quantum computing will scale to satisfy the requirements of its most powerful applications. Although continued progress in the fabrication and control of qubits is required, quantum computing scalability will depend as well on a comprehensive architectural Design considering a distributed multi-core approach as an alternative to the traditional monolithic version, hence including a communications perspective. However, this goes beyond introducing mere interconnects. Rather, it implies consolidating the full communications stack in the quantum computer structure. In this paper, we propose a double full-stack architecture encompassing quantum computation and quantum communications, which we use to address the monolithic versus distributed question with a Structured Design methodology. For that, we revisit the different quantum computing layers to capture and model their essence by highlighting the open Design variables and performance metrics. Using behavioral models and actual measurements from existing quantum computers, the results of simulations suggest that multicore architectures may effectively unleash the full quantum computer potential.Accepted Author ManuscriptQCD/Almudever La
-
Exploring a Double Full-Stack Communications-Enabled Architecture for Multi-Core Quantum Computers
2020Co-Authors: Rodrigo Santiago, Abadal Sergi, Alarcon Eduard, Almudever, Carmen G.Abstract:Being a very promising technology, with impressive advances in the recent years, it is still unclear how quantum computing will scale to satisfy the requirements of its most powerful applications. Although continued progress in the fabrication and control of qubits is required, quantum computing scalability will depend as well on a comprehensive architectural Design considering a multi-core approach as an alternative to the traditional monolithic version, hence including a communications perspective. However, this goes beyond introducing mere interconnects. Rather, it implies consolidating the full communications stack in the quantum computer architecture. In this paper, we propose a double full-stack architecture encompassing quantum computation and quantum communications, which we use to address the monolithic versus multi-core question with a Structured Design methodology. For that, we revisit the different quantum computing layers to capture and model their essence by highlighting the open Design variables and performance metrics. Using behavioral models and actual measurements from existing quantum computers, the results of simulations suggest that multi-core architectures may effectively unleash the full quantum computer potential.Comment: 15 pages, 9 figure
