The Experts below are selected from a list of 112374 Experts worldwide ranked by ideXlab platform
Lorenzo Maggi - One of the best experts on this subject based on the ideXlab platform.
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ISWCS - Slow Fading Channel selection: A restless multi-armed bandit formulation
2012 International Symposium on Wireless Communication Systems (ISWCS), 2012Co-Authors: Konstantin Avrachenkov, Laura Cottatellucci, Lorenzo MaggiAbstract:We deal with a multi-access wireless network in which transmitters dynamically select a frequency band to communicate on. The slow Fading Channel attenuations follow an autoregressive model. In the single user case, we formulate this selection problem as a restless multi-armed bandit problem and we propose two strategies to dynamically select a band at each time slot. Our objective is to maximize the SNR in the long run. Each of these strategies is close to the optimal strategy in different regimes. In the general case with several users, we formulate the problem as a stochastic game with uncountable state space, where the objective is the SINR. Then we propose two strategies to approximate the best response policy for one user when the other users' strategy is fixed.
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Slow Fading Channel selection: A restless multi-armed bandit formulation
2012 International Symposium on Wireless Communication Systems (ISWCS), 2012Co-Authors: Konstantin Avrachenkov, Laura Cottatellucci, Lorenzo MaggiAbstract:We deal with a multi-access wireless network in which transmitters dynamically select a frequency band to communicate on. The slow Fading Channel attenuations follow an autoregressive model. In the single user case, we formulate this selection problem as a restless multi-armed bandit problem and we propose two strategies to dynamically select a band at each time slot. Our objective is to maximize the SNR in the long run. Each of these strategies is close to the optimal strategy in different regimes. In the general case with several users, we formulate the problem as a stochastic game with uncountable state space, where the objective is the SINR. Then we propose two strategies to approximate the best response policy for one user when the other users' strategy is fixed.
Tungsang Ng - One of the best experts on this subject based on the ideXlab platform.
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performance of asynchronous orthogonal multicarrier cdma system in frequency selective Fading Channel
IEEE Transactions on Communications, 1999Co-Authors: Tungsang NgAbstract:An asynchronous multicarrier (MC) direct-sequence (DS) code-division multiple-access (CDMA) scheme for the uplink of the mobile communication system operating in a frequency selective Fading Channel is analyzed. The bit error rate performance of the system with either equal gain combining or maximum-ratio combining is obtained. Numerical results indicate that the system performs better than that of the conventional DS-CDMA system and another MC-DS-CDMA system.
Lijun Zhang - One of the best experts on this subject based on the ideXlab platform.
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application of rs coded mpsk modulation scenarios to compressed image communication in mobile Fading Channel
Vehicular Technology Conference, 2000Co-Authors: Lijun ZhangAbstract:The research is focused on Reed-Solomon (RS) codes in combination with multiple phase shift keying (MPSK) schemes for Rayleigh Fading Channel. Two different RS-MPSK coded-modulation (CM) scenarios are considered respectively and investigated via both theoretical method and computer simulation. Motivated by a recently increased interest in multimedia services in third-generation mobile radio system (IMT-2000), this effective CM scheme is applied to compressed image transmission over a Rayleigh Fading Channel and results show that system performance is improved significantly.
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Performance analysis of RS-BCH concatenated codes in Rayleigh Fading Channel
Fifth Asia-Pacific Conference on ... and Fourth Optoelectronics and Communications Conference on Communications, 1999Co-Authors: Dongfeng Yuan, Lijun ZhangAbstract:We analyze the performance of RS-BCH concatenated codes in a Rayleigh Fading Channel. An important formula is achieved by combining the performance of single level coding and the character of Channel modulation. The calculation result shows the advantage of RS-BCH concatenated codes in comparison with an uncoded scheme.
Konstantin Avrachenkov - One of the best experts on this subject based on the ideXlab platform.
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ISWCS - Slow Fading Channel selection: A restless multi-armed bandit formulation
2012 International Symposium on Wireless Communication Systems (ISWCS), 2012Co-Authors: Konstantin Avrachenkov, Laura Cottatellucci, Lorenzo MaggiAbstract:We deal with a multi-access wireless network in which transmitters dynamically select a frequency band to communicate on. The slow Fading Channel attenuations follow an autoregressive model. In the single user case, we formulate this selection problem as a restless multi-armed bandit problem and we propose two strategies to dynamically select a band at each time slot. Our objective is to maximize the SNR in the long run. Each of these strategies is close to the optimal strategy in different regimes. In the general case with several users, we formulate the problem as a stochastic game with uncountable state space, where the objective is the SINR. Then we propose two strategies to approximate the best response policy for one user when the other users' strategy is fixed.
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Slow Fading Channel selection: A restless multi-armed bandit formulation
2012 International Symposium on Wireless Communication Systems (ISWCS), 2012Co-Authors: Konstantin Avrachenkov, Laura Cottatellucci, Lorenzo MaggiAbstract:We deal with a multi-access wireless network in which transmitters dynamically select a frequency band to communicate on. The slow Fading Channel attenuations follow an autoregressive model. In the single user case, we formulate this selection problem as a restless multi-armed bandit problem and we propose two strategies to dynamically select a band at each time slot. Our objective is to maximize the SNR in the long run. Each of these strategies is close to the optimal strategy in different regimes. In the general case with several users, we formulate the problem as a stochastic game with uncountable state space, where the objective is the SINR. Then we propose two strategies to approximate the best response policy for one user when the other users' strategy is fixed.
Pablo Piantanida - One of the best experts on this subject based on the ideXlab platform.
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The Second-Order Coding Rate of the MIMO Quasi-Static Rayleigh Fading Channel
IEEE Transactions on Information Theory, 2015Co-Authors: Jakob Hoydis, Romain Couillet, Pablo PiantanidaAbstract:The second-order coding rate of the multiple-input multiple-output (MIMO) quasi-static Rayleigh Fading Channel is studied. We tackle this problem via an information-spectrum approach and statistical bounds based on recent random matrix theory techniques. We derive a central limit theorem (CLT) to analyze the information density in the regime where the block length n and the number of transmit and receive antennas K and N, respectively, grow simultaneously large. This result leads to the characterization of closed-form upper and lower bounds on the optimal average error probability when the coding rate is within O(1/√(nK)) of the asymptotic capacity.
