Analysis of coded noncoherent transmission in DS-CDMA mobile satellite communications

被引：9
|
作者：
Corazza, GE
De Gaudenzi, R
机构：
[1] Univ Roma Tor Vergata, DIE, I-00133 Rome, Italy
[2] European Space Agcy, European Space Res & Technol Ctr, NL-2200 AG Noordwijk, Netherlands
来源：
IEEE TRANSACTIONS ON COMMUNICATIONS | 1998年 / 46卷 / 11期
关键词：
mobile satellite communications; soft noncoherent detection; satellite diversity; CDMA;
D O I：
10.1109/26.729397
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The paper analyzes possible transmission schemes for satellite personal communication systems adopting Low/Medium-Earth orbit (LEO/MEO) constellations and Direct-Sequence Code Division Multiple Access (DS-CDMA) in the presence of fading and shadowing, the statistics off which are functions of the satellite elevation angle. In particular, the performance of M-ary Walsh-Hadamard orthogonal (MWHO) convolutionally coded DS-CDMA over a Rico-log-normal fading channel is analyzed in depth, and compared to the simpler coded differential BPSK (DBPSK) scheme. Optimization of the performance/complexity tradeoff in the metric computation for soft inputs to the Viterbi decoder is addressed. Upper bounds on the error probability without or with satellite diversity and equal gain combining are evaluated considering different coding rates. The effect of correlated fading is also taken into account via simulation. Among the various results, it is shown that the optimal coding rate is a function of the satellite elevation angle and of the diversity order, that the loss for using DBPSK instead of MWHO is in the range 1-1.4 dB, and that interleaving depth is a critical parameter.
引用
收藏
页码：1525 / 1535
页数：11
相关论文
共 50 条
  • [31] Practical RAKE receiver architecture for the downlink communications in a DS-CDMA mobile system
    Del Re, E
    Fantacci, R
    Giannoccaro, P
    IEE PROCEEDINGS-COMMUNICATIONS, 1998, 145 (04): : 277 - 282
  • [32] Performance evaluation of MC-CDMA and DS-CDMA schemes in satellite communications based on VSAT networks
    1600, World Scientific and Engineering Academy and Society, Ag. Ioannou Theologou 17-23, Zographou, Athens, 15773, Greece (13):
  • [33] Markov channel models for DS-CDMA communications
    Loetter, M. P.
    Van Rooyen, P.
    Swarts, F.
    Transactions of the South African Institute of Electrical Engineers, 88 (02):
  • [34] Channel equalization in DS-CDMA downlink communications
    Li, Kemin
    Liu, Hui
    Conference Record of the Asilomar Conference on Signals, Systems and Computers, 1999, 1 : 80 - 84
  • [35] Performance of Convolutionally Coded Multicarrier DS-CDMA System
    SONG Li-xin
    Semiconductor Photonics and Technology, 2005, (04) : 67 - 72
  • [36] Iterative multiuser receiver for a coded DS-CDMA system
    Rivera, JML
    Cruickshank, DGM
    Thompson, JS
    IEEE VTC 53RD VEHICULAR TECHNOLOGY CONFERENCE, SPRING 2001, VOLS 1-4, PROCEEDINGS, 2001, : 1518 - 1522
  • [37] Performance analysis of noncoherent DS-CDMA systems in a Nakagami fading channel with arbitrary parameters
    Efthymoglou, GP
    Aalo, VA
    Helmken, H
    IEE PROCEEDINGS-COMMUNICATIONS, 1997, 144 (03): : 166 - 172
  • [38] Concatenated coded spreading with coherent demodulation for DS-CDMA
    Frey, T
    Schramm, P
    48TH IEEE VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-3, 1998, : 1910 - 1914
  • [39] Performance analysis of noncoherent DS-CDMA systems in a Nakagami fading channel with arbitrary parameters
    Florida Atlantic Univ, Boca Raton, United States
    IEE Proc Commun, 3 (166-172):
  • [40] A new space-time differentially coded DS-CDMA transceiver system for reliable communications
    Wang, K
    Ge, HY
    2002 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOLS I-IV, PROCEEDINGS, 2002, : 2793 - 2796
12345