摘要
OFDM能够有效解决塑料光纤(POF)信道中频选衰落及码间干扰等问题,但其高峰均值及子信道间干扰容易产生误码,影响通信性能。在塑料光纤通信中引入在OFDM,并采用卷积编码技术,建立塑料光纤中的COFDM通信模型,并分析了卷积编码及维特比译码原理,提出了一个(2,1,7)卷积编码器,并对系统进行仿真。仿真结果表明在采用卷积码信道编码技术,能有效降低误码率,提高信号质量。
OFDM could effectively solve such problems as frequency-selective fading and inter-symbol interference the in P0F communication system, while its high PAPR and inter-channel interference （ICI） would easily cause error bits, thus influencing the communication quality. By combining OFDM with POF communication technique, the COFDM communication model based on convolution coding is proposed. This paper analyzes the convolution coding and the Principle viterbi decoding, presents a （2,1,7） convolution encoder. Simulation results show that the convolution coding technique could effectively improve the signal quality and reduce the bit error ratio in OFDM-POF Channel.
出处
《通信技术》
2012年第12期44-47,共4页
Communications Technology
基金
福建省教育厅科技项目(No.JB11281)
