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The Communication system of differrential Code Division Multiple Access and Key technology(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2002年01期
Page:
32-37
Research Field:
Publishing date:

Info

Title:
The Communication system of differrential Code Division Multiple Access and Key technology
Author(s):
Yin Kuixi 1;  Ke Wei 1;  Zhao Hua 1;  Song Wenjuan 1; Liu Guojin 2
1.College of Physics Science,Nanjing Normal University,210097,Nanjing,RPC; 2.Analysis and Test Centre,Nanjing Normal University,210097,Nanjing,PRC
Keywords:
instantaneous phase;  spread spectrum;  generator of w alsh code;  hilbert tranoformation
PACS:
TN929.53
DOI:
-
Abstract:
The hig h quality differential coding CDMA ( diffCDMA ) system w ith instantaneous phase that is new technolo gy in communication field has been dev ised. The principle of modulation w ith / 4-DQPSK instantaneous phase and the illustr atio n of demodulation has been devised. The new Walsh code taken as spr ead- spectrum code has been adopted. The application of the t wo items of important technolog y to the differential coding CDMA ( diffCDMA) system improves the capacity and eliminates t he fatal tr ansmission err or when communications are carried out from hig h speed r unning mobiles through such urban environment as rapid mult-i ray Rayleihg channel. This two items of techno logy inuoeve not only mathematical problems of communication theor y but also electronic cir cuit problems in diffCDMA system.

References:

[ 1] Ohba M, Yin Kuix i, Masahichi Kishi. 1. 6 Mbit/ sec High Capacity Land Mobile Transmission Characteristics of Differential Co ding CDMA over Multi Ray Rayleigh Fading Channel[ J] . IEEE VTC 99, Proc, 1999: 2333~ 2337.
[ 2] 杨义先, 林须端. 编码密码学[ M] . 北京: 人民邮电出版社, 1992, 21.
[ 3] Kishi M, Zhang X, Yin K. T he Hig h Capacity and H igh Speed diffCDMA with t he BCH Double Erro r Correction and Continuous Phase Primary Modulation[ J] . PIMRC 99, Osaka, Japan, 1999: 1556~ 1560.
[ 4] Yin K, Kishi M. The hig h capacity and high speed diffCDMA w ith the BCH double er ror cor rection and continuous phase Pr imar y modulation. PIMRC 99, Osaka, Japan, 1999: 1550~ 1555.

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Memo:
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Last Update: 2013-04-29