2D MARKOVIAN SS CODES FLATTEN TIME-FREQUENCY DISTRIBUTION OF SIGNALS IN ASYNCHRONOUS GABOR DIVISION CDMA SYSTEMS

被引：0
|
作者：
Kohda, Tohru [1 ]
Jitsumatsu, Yutaka [1 ]
Aihara, Kazuyuki [2 ]
机构：
[1] Kyushu Univ, Dept Informat, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan
[2] Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan
来源：
2011 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING | 2011年
关键词：
Time and frequency offsets; Spread Spectrum code; CDMA; Ambiguity function; interference; COMMUNICATION;
D O I：
暂无
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
We propose a Gabor division (GD)-CDMA system which permits time and frequency offsets. Negatively correlated time-and frequency-domain spreading codes have shown to reduce the variances of mutual-and self-interferences. In this paper, we show that such negatively correlated spreading codes have another important property that they flatten the time-frequency energy distributions of signals in GD-CDMA system.
引用
收藏
页码：3140 / 3143
页数：4
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