1. Department of Electrical and Electronic Engineering, Zhejiang Institute of Mechanical and Electrical Engineering, Hangzhou 310053, China; 2. Nokia Siemens Network Technology (Beijing) Co. LTD Zhejiang Branch, Hangzhou 310053, China
Clc Number:
TP301.6
Fund Project:
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Abstract:
The paper firstly described hybridterm BF algorithm for common 4G wireless communication system. Hybrid beamforming is between longterm and shortterm, nearoptimal for Nrx=1. For hybrid algorithms of dual layer beamforming, each RB instantaneous channel could be expressed as similar to single layer case for each UE. An eigenvalue decomposition is applied to instantaneous or averaged channel correlation matrix. The beamformer transmits all available power along the channel’s strongest direction (implemented via the dominant eigenvector of correlation matrix). And then make a software designing implementation for hybridterm BF, too. It is involved in ULSRS combiner and DL PHY layer designing. Finally, the paper gives the detailed simulation for different performance index and gets some technical conclusion.