A Parity Check Node Synchronization Based Method for Solving Phase Ambiguity Problem in DVB-S Systems

摘要：

Node synchronization is the process of finding codeword boundaries of convolutional code sequence, and syndrome-based method is an efficient algorithm for node synchronization even at low Eb/N0.In this paper, a method derived from syndrome-based node synchronization is proposed, which is applied for phase ambiguity resolution of DVB-S systems. The method proposed can detect and correct ±π/2 phase ambiguity of π/4-QPSK modulation. Performance simulation and implement results show that it works properly with Eb/N0 below to 6dB or less.

关键词： node synchronization phase ambiguity syndrome viterbi decoder

作者: Jielin FU Yongjun TANG

作者单位: Wireless Network Lab,Inner Box.96 Beijing University of Posts and Telecommunications Beijing 100876, Information & Communication College Guilin University of Electronic Technology Guilin 541004,China

会议类型: 国际会议

会议名称: The Fifth International Conference on Information Assurance and Security(第五届信息保障与安全国际会议)

会议地点: 西安

会议语种:英文

页码: 463-466

在线出版日期: 2009-08-18（万方平台首次上网日期，不代表论文的发表时间）