Research of Soft Decision Modulations Based on Parallel Combinatory Spread Spectrum System

摘要：

The modulation methods are discussed in parallel combinatory spread spectrum (PCSS) system. Several modulation methods which can be demodulated without threshold judging (that is soft decision) is mainly studied. The system model is built and simulated in this paper. According to the correlation of superposition PN sequences, a new soft decision QPSK modulation in PCSS system is proposed. This simulation results show that the reliability of proposed soft decision QPSK modulation is better than that of hard decision QPSK modulation and this method is useful in engineering application.

关键词： parallel combinatory spread spectrum system soft decision modulation correlation of superposition PN sequences

作者: Mingduo LIU Honglei LI Lili GUO

作者单位: College of Information and Communication Engineering Harbin Engineering University Harbin 150001, Ch The 61769 Unit of PLA Harbin 150001, China

会议类型: 国际会议

会议名称: 2012 5th Global Symposium on Millimeter-Waves(2012年第五届全球毫米波会议 GSMM 2012)

会议地点: 哈尔滨

会议语种:英文

页码: 507-511

在线出版日期: 2012-05-27（万方平台首次上网日期，不代表论文的发表时间）