Laser & Optoelectronics Progress, Volume. 50, Issue 10, 100604(2013)
Performance Study of the Diversity Reception System Based on LDPC Codes
In order to reduce the influence of atmospheric turbulence on the performance of atmospheric optical communication system, low-density parity-check (LDPC) codes combined with multiple-input multiple-output technologies is applied. Decoding initialization formulas of single-input multiple-output (SIMO) system are derived in the forms of maximal ratio combining (MRC), equal gain combining (EGC) and selection combining, the system bit-error-rate (BER) performances are compared. The simulation results show that the atmospheric optical communication SIMO system of LDPC coding has better BER performance than that in SISO system; error performance of SIMO system differs with different combining schemes; the system in MRC has the lowest bit error rate followed by system in EGC with the same signal-to-noise ratio; with the increasing number of receiving antennas in a certain number of transmitting antennas, the BER will be decreased. So, it has some significance in the design of atmospheric optical communication system and theoretical research.
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Liu Jialin, Hao Shiqi, Zhou Jianguo, Wang Yong. Performance Study of the Diversity Reception System Based on LDPC Codes[J]. Laser & Optoelectronics Progress, 2013, 50(10): 100604
Category: Fiber Optics and Optical Communications
Received: May. 28, 2013
Accepted: --
Published Online: Aug. 21, 2013
The Author Email: Jialin Liu (liujialin909@126.com)