A Vector Mapping Scheme For Efficient Implementation Of Beamforming Mimo Systems
2008 IEEE MILITARY COMMUNICATIONS CONFERENCE: MILCOM 2008, VOLS 1-7(2008)
摘要
Quantized feedback in multiple antenna systems has the potential to increase throughput and/or reduce probability of outage. However, current beamforming codebook designs lead to large implementation complexity of the channel quantizer. We propose a vector mapping scheme to construct beamforming codebooks from existing codebooks. We show that beamforming codebooks; constructed via the proposed vector mapping have a structure that allows an efficient immplementation of the channel quantizer. We show that the proposed vector mapping can also be used to simplify the implementation of the chanel quantizer in a WiMAX compliant system, where the codebooks have already been defined. Simulation results validate the proposed codebook construction method.
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关键词
construction industry,wimax,transmitters,quantization,mimo
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