Journal of South China University of Technology(Natural Science Edition) ›› 2012, Vol. 40 ›› Issue (9): 110-115.

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

Memory-Based Symmetric Raised-Cosine Keying Modulation Method

Guo Li-li  Zhou Bin  Yang Peng  Sun Zhi-guo   

  1. College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,Heilongjiang,China
  • Received:2012-04-24 Revised:2012-05-24 Online:2012-09-25 Published:2012-08-01
  • Contact: 郭黎利(1955-) ，男，教授，博士生导师，主要从事通信与信息系统研究． E-mail:guolili@ hrbeu.edu.cn
  • About author:郭黎利(1955-) ，男，教授，博士生导师，主要从事通信与信息系统研究．
  • Supported by:

    国家自然科学基金资助项目( 61101141)

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Abstract:

The phase and frequency of the symmetric raised-cosine keying ( SRCK) modulation signals are continuous,but the bit error rate ( BER) of the SRCK signals is higher than that of the minimum frequency shift keying ( MSK) signals. In order to solve this problem,an improved SRCK modulation method is devised to decrease the BER by adding the memory between the SRCK signals corresponding to symbols. Simulated results show that the signals obtained through the devised modulation method are superior to the MSK signals in terms of the energy concentration and the BER performance,with a gain of 3dB,and that,for the improved SRCK signals,suitable modulation parameters can be determined by calculating the minimum Euclidean distance.

Key words: symmetric raised-cosine keying, memory, bit error rate, energy concentration

CLC Number: