计算机应用 ›› 2012, Vol. 32 ›› Issue (04): 946-948.DOI: 10.3724/SP.J.1087.2012.00946

• 网络与通信 • 上一篇    下一篇

BICM-ID联合迭代载波相位和信道估计算法

崔鹏辉,杨育红,曾祥峰   

  1. 信息工程大学 信息工程学院,郑州 450002
  • 收稿日期:2011-10-12 修回日期:2011-12-06 发布日期:2012-04-20 出版日期:2012-04-01
  • 通讯作者: 崔鹏辉
  • 作者简介:崔鹏辉(1988-),男,河南新乡人,硕士研究生,主要研究方向:卫星通信信号处理;杨育红(1964-),女,江西南昌人,副教授,主要研究方向:卫星通信网络安全;曾祥峰(1986-),男,辽宁沈阳人,硕士研究生,主要研究方向:卫星抗干扰。
  • 基金资助:
    国家重大科技专项

Iterative Carrier Phase and Channel Estimation Algorithm in BICM-ID

CUI Peng-hui,YANG Yu-hong,ZENG Xiang-feng   

  1. Institute of Information Engineering, Information Engineering University, Zhengzhou Henan 450002, China
  • Received:2011-10-12 Revised:2011-12-06 Online:2012-04-20 Published:2012-04-01
  • Contact: CUI Peng-hui

摘要: 针对16APSK信号,提出一种比特交织编码调制迭代译码(BICM-ID)联合迭代载波相位和信道估计算法。该算法基于最大似然估计算法,利用BICM-ID译码产生的硬判决信息,通过迭代的方式在相位估计、信道估计和译码之间交换信息,从而实现相位估计、信道估计和译码的联合处理。在误码率为10-4时,该算法与理想性能曲线仅相差0.5dB左右;算法能够估计的相差范围为[-20°,20°]。

关键词: 比特交织编码调制迭代译码, 16APSK信号, 相位估计, 信道估计, 最大似然估计

Abstract: This paper proposed an iterative carrier phase and channel estimation algorithm for 16APSK in Bit-Interleaved Coded Modulation with Iterative Decoding (BICM-ID). The algorithm was based on Maximum Likelihood (ML) estimation, which made use of the decision information provided by the decoder and exchanged information between phase, channel estimation and decoder through iteration, so as to combine phase, channel estimation with decoder. The simulation results show the algorithm can get the performance only 0.5dB lower than the ideal one, and can effectively estimate the phase difference from -20 degree to 20 degree.

Key words: Bit-Interleaved Coded Modulation with Iterative Decoding (BICM-ID), 16APSK signal, phase estimation, channel estimation, Maximum Likelihood (ML) estimation