| Power allocation for MIMO-OFDM systems with multi-user decoupling and scheduling |
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| 引用本文： | 段世平,徐友云,宋文涛. Power allocation for MIMO-OFDM systems with multi-user decoupling and scheduling[J]. 系统工程与电子技术(英文版), 2005, 16(3) |
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| 作者姓名： | 段世平 徐友云 宋文涛 |
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| 作者单位： | Dept .of Electronic Engineering，Shanghai Jiaotong Univ，Dept .of Electronic Engineering，Shanghai Jiaotong Univ，Dept .of Electronic Engineering，Shanghai Jiaotong Univ Shanghai 200030，P. R. China，Shanghai 200030，P. R. China，Nanjiny Institute of Communication Engineering，Nanjing 210007，P. R. China，Shanghai 200030，P. R. China |
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| 基金项目： | This project was supported bythe National Natural Science Foundation of China (60272079)，the National High Technol-ogy Research and Development Plan Project of China (2001AA123014) . |
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| 摘 要： | 1 .INTRODUCTIONRecentinformation-theoretic results haveshownthat multi-ple-input multiple-output ( MI MO) channels have a greatpotential to i mprove spectral efficiency in rich scatteringwireless channels[1 ,2].Si multaneously,orthogonal frequen-cy division multiplexing (OFDM) has gained anincreasinginterest as a promisingalternativeforfuture highrate wide-band wireless systems because of its lowcomplexity signalprocessingto counteract frequency selectivity. The combi-nationof MI MOsy…
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Power allocation for MIMO-OFDM systems with multi-user decoupling and scheduling |
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| Duan Shiping,Xu Youyun,Song Wentao. Power allocation for MIMO-OFDM systems with multi-user decoupling and scheduling[J]. Journal of Systems Engineering and Electronics, 2005, 16(3) |
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| Authors: | Duan Shiping Xu Youyun Song Wentao |
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| Affiliation: | 1. Dept.of Electronic Engineering,Shanghai Jiaotong Univ.,Shanghai 200030,P.R.China
2. Dept.of Electronic Engineering,Shanghai Jiaotong Univ.,Shanghai 200030,P.R.China;Nanjiny Institute of Communication Engineering,Nanjing 210007,P.R.China |
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| Abstract: | A power allocation scheme for multi user multiple input multiple output orthogonal frequency division multiplexing (MIMO OFDM) systems with channel state information (CSI) on transmitter and receiver is presened. Multi user power allocation can be decoupled into single user power allocation throughout null space mapping of multi user channel and power allocation can be performed throughout spatial spectral water filling for per user. To deal with more users in system and fading correlation, scheduling is performed to maintain the gain of power allocation. The proposed scheme can substantially improve system's spectral efficiency with low complexity. Simulation results validate the accuracy of theoretic analyses. |
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| Keywords: | power allocation multi user information theory radio resource management MIMO OFDM. |
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