摘要
基于最大距离分割(MDS)码的码重分布,得到了不完全译码器中发生译码错误和译码失败的概率.根据译码错误和译码失败对MDS码误比特率的影响,推导出精确的误比特率公式.利用该公式可计算出不同长度的MDS码在加性白高斯噪声(AWGN)信道中的误比特率.仿真结果表明,该公式比传统的误比特率上限公式具有更高的精度.
Based on the weight distribution of MDS codes, the probabilities of decoding error and decoding failure for incomplete decoder were obtained. Considering the effect of decoding error and failure on BER, the accurate BER formula was deduced from the probabilities. The BERs of MDS codes with different length were calculated in Additional White Gaussion Noise (AWGN) channel via the formula. The simulation results show that the BER got from the proposed formula is more precise than the conventional BER upper bound.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2004年第12期1972-1974,1978,共4页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金(6001161943)
香港研究资助局(RGC)基金(N-HKU709/00)联合资助
北京交通大学科技基金资助项目(2003RC042)
关键词
误比特率
最大距离分割码
码重分布
Codes (symbols)
Decoding
Gaussian noise (electronic)
Probability
