2012, Volume 14, Issue 3
Strategic Study of CAE >> 2012, Volume 14, Issue 3
High efficiency spreading spectrum modulation based on double orthogonal complex sequences
School of Information Science and Technology, Southeast University, Nanjing 210096, China
Next Previous
Abstract
This paper presents a kind of high efficiency spreading spectrum modulation scheme using double orthogonal complex sequences (DoCS). In this scheme, input data bit-stream is split into many groups with length M. Each group is then mapped into a word of width M and then utilized to select one sequence from 2M-2 DoCS sequences each with length L. After that, the selected sequence is modulated on carrier in QPSK(quadrature phase shift keying) mode. In addition, a novel method named forward phase correction (FPC) is put forward for carrier recovery.
Keywords
modulation and demodulation ; high efficiency spreading spectrum modulation ; forward phase correction ; double orthogonal complex sequences
Figures
图1
图2
图3
图4
References
[ 1 ] 江修富，许斌，曹坤梅，高效扩频通信技未的研究[J]。装备指挥技术学就学报，2002，13（4）：78-81.
[ 2 ] 曾孝平，王宇峰，刘劲，软扩须技不及其熊码与性能分析[J].重庆部电学院学报，2001，6（增刊）：22-25.
[ 3 ] 何振亚，数字信号处理的理论与应用[M].北京；人民邮电出叛社，1983.
[ 4 ] 奖昌，通信原理教程[M].北京：电子工业出版社，2007.
[ 5 ] John G.Proakis.数字通信[M].4版.张力军，等译。北京：电子工业出版社，2005，
[ 6 ] 汪润生，周师熊.数据通估工程[M].4版.北京：人民纸电出版社，1990.
[ 7 ] Andren C.Webster M.CCK Modulator Deliverw 11lbps for HighRate 820.1l Extension[D].Wireless Sypposium/Portable By De-sign Canference Proreedings，1999.
[ 8 ] Pursley MB.Royster T C.Propetties and perfomance of the IEEE802.11b camplemenlary-cole-key signal sels，Communi-cationA[J]，IEEE Trns，，2009，57（2）：440-449.
京公网安备 11010502051620号
