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	A novel type of code design for the CP-CDMA system: Comb spectrum grouped codes
	Cheng, HB ; Ma, M ; Jiao, BL
	2004
关键词	CP-CDMA equalizer Group Code Comb spectrum code
英文摘要	The motivation of the present paper is to develop better CDMA codes for reducing the hardware complexity of the conventional CP-CDMA. This technology combines the frequency orthogonality of OFDM to CDMA code design for grouping the codes and allows a significant reduction for the calculations in channel equalization. The proposed method is referred to as OFDG code, which divides the codes of M chips in length into N groups, which are orthogonal one another in frequency domain. Each of the groups contains K codes which are mutually orthogonal in time domain. The design principle is introduced and a solution, called CS code, is obtained by the use of two operations to the conventional orthogonal code set; (1) an operation of cyclic repetition and (2) an operation of angle rotation. In comparison with the CP-CDMA, the points taken to channel equalization of CP-CS CDMA can be reduced by a factor of 1/N. The simulation results confirm effectiveness of this approach.; Telecommunications; CPCI-S(ISTP); 0
语种	英语
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/293831]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Cheng, HB,Ma, M,Jiao, BL. A novel type of code design for the CP-CDMA system: Comb spectrum grouped codes. 2004-01-01.

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