一种基于均值反馈模型的自适应空间子信道分配算法
doi: 10.3724/SP.J.1146.2006.00812
An Adaptive Spatial Subchannel Allocation Algorithm Based on Mean Feedback Model
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摘要: MIMO/OFDM是未来宽带无线通信接口的有效架构。该文针对多用户MIMO/OFDM系统，提出了一种基于均值反馈模型的自适应空间子信道分配算法，以获取最大的系统吞吐量为目标，推导了子载波分配准则，并给出了相应的算法流程。仿真结果表明，该算法具有良好的性能，有效地提高了系统的传输速率。Abstract: MIMO/OFDM is an effective architecture for future wireless communication systems. A spatial subchannel allocation algorithm based on mean feedback model over multiuser MIMO/OFDM systems is proposed in this paper. With the goal of maximizing overall data throughput the criteria of subcarrier allocation is derived and the adaptive allocation approach is developed. The simulation results show that the proposed algorithm can efficiently achieve good performance and high total transmission rate.
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[1] Sampath H, Talwar S, and Tellado J, et al.. A fourth generation MIMO-OFDM: Broadband wireless system: Design, performance, and field trial results [J].IEEE Commun. Mag..2002, 40(9):143-149 [2] Wong K K, Cheng R S K, and Letaief K B, et al.. daptive antennas at the mobile and base stations in an OFDM/ DMA system [J]. IEEE Trans. on Communications, 2001, 9(6): 95-206. [3] Li J, Letaief K B, and Ma Z, et al.. Spatial multiuser access with MIMO smart antennas for OFDM systems[A]. IEEE VTC[C], Atlantic , Oct. 2001, 1553-557. [4] Visotsky E and Madhow U. Space-time transmit precoding with imperfect feedback[J].IEEE Trans. on Inform. Theory.2001, 47(5):2632-2639 [5] Zhou S and Giannakis G B. Optimal transmitter eigen- beamforming and space-time block coding based on channel mean feedback[J].IEEE Trans. on Signal Processing.2002, 50(10):2599-2613 [6] Jakes W. Microwave Mobile Communications. New York: Wiley, 1974, Chapter 1. [7] Godsmith A J and Chua S G. Variable-rate variable-power MQAM for fading channels [J].IEEE Trans. on Commun.1997, 45(10):1218-1230 -
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