Browse > Article

Design of Signal Constellation for MP/CDMA  

Ahn, Moo-Gun (경희대학교 전자정보학부)
Hong, Een-Kee (경희대학교 전자정보학부)
Shon, Won (경희대학교 전자정보학부)
Kim, Young-Soo (경희대학교 전자정보학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.27, no.8B, 2002 , pp. 802-808 More about this Journal
Abstract
In this paper, a new signal constellation design method is proposed for Multi-Phase(MP)/CDMA and its performance is compared with that of conventional method. In general MPSK modulation, the neighbor phases are allocated to the symbols that have only one different bit. However, the neighbor phases are allocated to the signal levels that have small differences in amplitude after clipping process since the transmitting signals in MP/CDMA are not binary symbols but the signal levels. The analysis shows that the performance of proposed scheme is much better than that of conventional method and it is better to increase the number of clipping levels than decrease the number of clipping levels and increase the region of guard phase.
Keywords
Citations & Related Records
연도 인용수 순위
  • Reference
1 오종갑, 김성필, 김명진, 안호성, 류숭문, '고속 무선 데이터 전송을 위한 이진 레벨 를리핑 멀티코드 PW/CDMA 시스림', 한국통신학회 추계 학술대회, 2001
2 류승문, 김제우, 문장식, 김효성, 'PW/ CDMA 와 DS/CDMA 의 성능 비교', 11 th JCCI 2001
3 T. Wada, T. Yamazato, M. Katayama, and A. Ogawa, 'A constant amplitude coding for orthogonal multi-code CDMA systems,' IEICE Trans. Fund. Dec. 1997
4 안철용, 안치를 김동구, 류승문, '고속데이터 전송을 위한 Multi-Phased MC-CDMA 시스템의 제안 및 성능 분석', 한국통신학회 논문지, Vo1.26, No,12, 2001
5 'CS/CDMA 방식 및 그것을 구현한 장치' (특허출원 번호 10-2001-0061738 호 : 2001.10. 8)