摘要
研究了在加性高斯白噪声(AWGN)信道中采用连续相位调制(CPM)的LT码串行级联系统。给出了一种联合解调译码算法,并运用高斯近似方法优化设计了在CPM下LT码的度分布函数。计算机仿真结果表明,优化设计的LT-CPM系统具有更低的误码率。
This paper investigates a serial concatenation of LT codes with continuous phase modulation （CPM） in the additive white Gaussian noise （AWGN） channel A joint demodulation and decoding algorithm is given, and Gaussian approximation method is used to optimize degree distribution function of LT codes with CPM. Simulation results show that the optimized LT-CPM system has lower bit error rate.
出处
《微型机与应用》
2013年第7期61-63,共3页
Microcomputer & Its Applications
基金
兰州大学中央高校基本科研业务费专项基金(lzujbky-2012-50)
关键词
LT码
AWGN信道
连续相位调制
迭代译码
LT codes
AWGN channels
continuous phase modulation
iterative decoding
