本文選題：光傳輸系統(tǒng) + 隨機(jī)構(gòu)造方法��； 參考：《半導(dǎo)體光電》2014年06期

【摘要】：分析光傳輸系統(tǒng)的傳輸特性與規(guī)則LDPC碼的隨機(jī)構(gòu)造方法之后,提出LDPC碼的一種新穎隨機(jī)構(gòu)造方法。基于該構(gòu)造方法構(gòu)造了一種新穎的碼率為93.7%、冗余度為6.69%的規(guī)則SCG-LDPC(3969,3720)碼,該規(guī)則LDPC碼在將來的硬件實(shí)現(xiàn)中可相對(duì)地節(jié)省硬件存儲(chǔ)空間和減少計(jì)算量。仿真分析表明:該新穎的SCG-LDPC(3969,3720)碼在BER為10-8時(shí),與同碼率同冗余度的ITU-T G.975建議中RS(255,239)碼和ITU-T G.975.1建議中LDPC(32640,30592)碼相比,其凈編碼增益(NCG)和距離Shannon限都分別改善了約1.92dB和0.97dB。因而該規(guī)則LDPC碼的糾錯(cuò)性能更為優(yōu)越,更適用于光傳輸系統(tǒng)。
[Abstract]:After analyzing the transmission characteristics of optical transmission system and the random construction method of regular LDPC codes, a novel random construction method of LDPC codes is proposed.Based on this construction method, a novel regular SCG-LDPC code with a rate of 93.7and a redundancy of 6.69% is constructed. The rule LDPC code can save the storage space and reduce the computation cost in the future hardware implementation.Simulation results show that when the BER is 10-8, the new SCG-LDPC-3969N3720) code is better than the ITU-T G.975 recommendation with the same code rate and the LDPC3264040305992) code with the same rate and redundancy. The net coding gain and the distance Shannon limit of the new SCG-LDPC code are improved by about 0.97dBand 0.97dB. respectively.Therefore, the error-correcting performance of the regular LDPC codes is more superior and more suitable for optical transmission systems.
【作者單位】： 重慶郵電大學(xué)光纖通信技術(shù)重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金項(xiàng)目(61371096,61275077,61003256) 2013年重慶郵電大學(xué)大學(xué)生科研訓(xùn)練計(jì)劃項(xiàng)目(A2013-42) 重慶市自然科學(xué)基金項(xiàng)目(2010BB2409)
【分類號(hào)】：TN929.1;TN911.22
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本文編號(hào)：1746158