An Adaptive Approach to Reduce Complexity of EBB in LTE Downlink TDD Systems

摘要：

As one kind of multiple input multiple output (MIMO) techniques in the 3GPP Long Term Evolution (LTE) and LTE-advanced (LTE-A) systems, eigenvalue based beam-forming (EBB) can maximize the system capacity in single-user scenario. Traditionally, EBB algorithm often takes singular value decomposition (SVD) to the average channel matrix of each resource block (RB) or RB-group. This method is simple but very inflexible, and sometimes it may result in unnecessary high complexity. In this paper, we propose an adaptive approach that combines first order perturbation compensation (FOPC) with traditional SVD to get the beamforming vector or precoding matrix. It has been validated by simulations that our approach can significantly reduce the implementation complexity of EBB with slight performance loss.

作者: Zhixun Zhou Xiantao Cheng Hongxuan Liu Gang Wu

作者单位: National Key Laboratory of Science and Technology on Communications University of Electronic Science and Technology of China Chengdu, China

会议类型: 国际会议

会议名称: 2010年无线通信与信号处理国际会议

会议地点: 上海

会议语种:英文

页码: 1-5

在线出版日期: 2010-10-20（万方平台首次上网日期，不代表论文的发表时间）