吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (6): 2080-2084.doi: 10.13229/j.cnki.jdxbgxb201506050

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Low complexity adaptive generalized spatial modulation for visible light communication

ZHU Yi-jun1, FU Hong-shuang1, CAI Wen-bing2   

  1. 1.Institute of Information System Engineering,PLA Information Engineering University,Zhengzhou 450002,China;
    2.Beijing Institute of Tracking and Telecommunication Technology,Beijing 100094,China
  • Received:2014-04-21 Online:2015-11-01 Published:2015-11-01

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Abstract: Aiming at the high correlation of optical channel, an Adaptive Generalized Spatial Modulation (AGSM) algorithm was proposed based on the pair error probability of GSM. The antenna combinations and modulation levels were optimized jointly based on the Channel State Information (CSI) for better Bit Error Rate (BER) performance. The computational complexity of the AGSM was high, so a Simplified AGSM (S-AGSM) was then put forward. The S-AGSM utilizes QR decomposition to limit the exhaustive search space, thus to lower the computational complexity. Simulation results show that the S-AGSM performs better than GSM and GSM with only antenna selection. Moreover, S-AGSM has lower complexity than AGSM.

Key words: communication, visible light communications, generalized spatial modulation, adaptive modulation, channel correlation

CLC Number: 

  • TN929.12
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