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On Optimum Power Allocation for the V-BLAST

by Victoria Kostina, Sergey Loyka, Senior Member - IEEE Trans. Communications, submitted
"... Abstract—A unified analytical framework for optimum power allocation in the unordered V-BLAST algorithm and its comparative performance analysis are presented. Compact closed-form approximations for the optimum power allocation are derived, based on average total and block error rates. The choice of ..."
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Abstract—A unified analytical framework for optimum power allocation in the unordered V-BLAST algorithm and its comparative performance analysis are presented. Compact closed-form approximations for the optimum power allocation are derived, based on average total and block error rates. The choice

Optimum power allocation in cooperative networks

by Jaime Adeane, Miguel R. D. Rodrigues, Ian J. Wassell - Proceedings of the Postgraduate Research Conference in Electronics, Photonics, Communications and Networks, and Computing Science , 2005
"... Abstract — Cooperation among network users provides trans-mit diversity in cases where wireless transmitters, due to size and power limitation, cannot support multiple antennas. We consider cooperation between M users, where each user achieves space-time diversity by using other users ’ antennas as ..."
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as relays. Cooperation among users has been shown to achieve impressive gains as compared to a non-cooperative system while maintaining the same information rate, transmit power, and bandwidth [1], [2], [3], [4]. This paper formulates an optimum power allocation scheme appropriate for a cooperative network

Optimum Power Allocation in Parallel Poisson Optical Channel

by M M Alem-Karladani , L Sepahi , M Jazayerifar , K Kalbasi
"... Abstract-In this paper we investigate the Shannon capacity of single and parallel Poisson channels in different scenarios. At first, by examining the capacity equation of the single Poisson channel, the minimum average power that maximizes the capacity is found. Then, applying the method of Lagrang ..."
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of Lagrange multipliers on the capacity expression of the parallel Poisson channel, we obtain the optimum power allocation maximizing the parallel Poisson channel capacity.

Optimum Power Allocation and Bit Loading for BICM Systems

by David Matas, Meritxell Lamarca
"... Abstract—This paper introduces a joint bit loading and power allocation algorithm for systems combining bit-interleaved coded modulation (BICM) with multicarrier transmission. The pro-posed algorithm maximizes the mutual information, so it can be regarded as a generalization of mercury/waterfilling ..."
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Abstract—This paper introduces a joint bit loading and power allocation algorithm for systems combining bit-interleaved coded modulation (BICM) with multicarrier transmission. The pro-posed algorithm maximizes the mutual information, so it can be regarded as a generalization of mercury

Performance Analysis of V-BLAST with Optimum Power Allocation

by Victoria Kostina, Sergey Loyka
"... Abstract—Comprehensive performance analysis of the unordered V-BLAST algorithm with various power allocation strategies is presented, which makes use of analytical tools and resorts to Monte-Carlo simulations for validation purposes only. High-SNR approximations for the optimized average block and t ..."
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Abstract—Comprehensive performance analysis of the unordered V-BLAST algorithm with various power allocation strategies is presented, which makes use of analytical tools and resorts to Monte-Carlo simulations for validation purposes only. High-SNR approximations for the optimized average block

Optimum power allocation for relay assisted F/TDMA ad hoc networks

by Semih Serbetli, Aylin Yener - In IEEE Int. Conf. on Wireless Networks, Comm., and Mobile Computing , 2005
"... Abstract — In this paper, we study the power allocation problem at the relay nodes for two-hop F/TDMA networks with multiple sources and destinations. Considering the sum capacity as the performance metric, we solve the problem of optimally allocating the total power of each relay node between the t ..."
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the transmissions it is assisting. We consider regenerative decode-and-forward (RDF), nonregenerative decode-and-forward (NDF), amplifyand-forward (AF) and compress-and-forward (CF) at the relay nodes. We observe that the optimum power allocation for the RDF and NDF cases are modified water-filling solutions

Cooperative Communication Protocols in Wireless Networks: Performance Analysis and Optimum Power Allocation

by Wireless Pers Commun, W. Su (b, K. J. Ray Liu
"... Abstract In this paper, symbol-error-rate (SER) performance analysis and optimum power allocation are provided for uncoded cooperative communications in wireless networks with either decode-and-forward (DF) or amplify-and-forward (AF) cooperation protocol, in which source and relay send information ..."
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Abstract In this paper, symbol-error-rate (SER) performance analysis and optimum power allocation are provided for uncoded cooperative communications in wireless networks with either decode-and-forward (DF) or amplify-and-forward (AF) cooperation protocol, in which source and relay send information

Near-optimum Power Allocation for Outage Restricted Distributed MIMO Multihop Networks

by Dirk Wübben, Yidong Lang - in IEEE Proc. Global Communications Conference (GLOBECOM , 2008
"... Abstract—The throughput of multi-hop communication systems can significantly be increased by the application of MIMO concepts. To utilize the physical resources in an efficient way while meeting the Quality-of-Service (QoS) constraints appropriate power allocation strategies are desired. In this pap ..."
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. In this paper the total transmit power of a MIMO multi-hop system is minimized under the constraint of a given end-to-end outage probability. The optimum power allocation corresponds to a convex optimization problem. In order to achieve an analytical solution, the original task is relaxed by stringent

Optimum power allocation for parallel Gaussian channels with arbitrary input distributions

by Angel Lozano, Antonia M. Tulino, Sergio Verdú - IEEE TRANS. INF. THEORY , 2006
"... The mutual information of independent parallel Gaussian-noise channels is maximized, under an average power constraint, by independent Gaussian inputs whose power is allocated according to the waterfilling policy. In practice, discrete signaling constellations with limited peak-to-average ratios (m- ..."
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The mutual information of independent parallel Gaussian-noise channels is maximized, under an average power constraint, by independent Gaussian inputs whose power is allocated according to the waterfilling policy. In practice, discrete signaling constellations with limited peak-to-average ratios (m

SER Performance Analysis and Optimum Power Allocation for Decode-and-Forward Cooperation Protocol in Wireless Networks

by Weifeng Su, Ahmed K. Sadek, K. J. Ray Liu
"... Abstract — In this paper, symbol-error-rate (SER) performance analysis is provided for a decode-and-forward cooperation protocol in wireless networks. We derive closed-form SER formulation for the cooperation system with PSK and QAM signals. Moreover, two SER upper bounds are established to show the ..."
Abstract - Cited by 27 (11 self) - Add to MetaCart
the asymptotic performance of the cooperation protocol, in which one of them is tight at high signal-to-noise ratio. Based on the SER performance analysis, we also determine the optimum power allocation for the cooperation systems. It turns out an equal power strategy is in general not optimum in the cooperation
Results 1 - 10 of 11,840