一种用于CP-CDMA系统的正交频率分组码:梳状频谱码

doi:10.3321/j.issn:0479-8023.2005.03.019

CORC > 北京大学 > 信息科学技术学院

	一种用于CP-CDMA系统的正交频率分组码:梳状频谱码; An Orthogonal Frequency Divided Group Code for CP-CDMA System: Comb Spectrum Code
	程红兵 ; 马猛 ; 焦秉立
刊名	北京大学学报自然科学版
	2005
关键词	CP-CDMA CP-CDMA equalizer group code comb spectrum code 均衡器分组码梳状频谱码
DOI	10.3321/j.issn:0479-8023.2005.03.019
英文摘要	运用OFDM中的频率正交的概念将CDMA码进行分组,从而大大降低信道均衡的计算复杂度.所建议的正交频率分组(OFDG)码是将长度为 M 的码集分成 N 组,任意两组码在频域上相互正交.同一个组内的码在时域上相互正交.文章介绍了这种码的设计准则,并给出了一个具体的实例,称为梳状频谱(CS)码.CS码利用传统的正交码通过2步操作得到: (1) 循环重复操作; (2) 角度旋转操作.与传统的CP-CDMA相比,CP-CS-CDMA 用于信道均衡的点数减少了 N 倍.仿真结果验证了这一方法的有效性.; The motivation 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 the effectiveness of this approach.; 中文核心期刊要目总览(PKU); 中国科学引文数据库(CSCD); 0; 3; 476-483; 41
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/22879]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	程红兵,马猛,焦秉立. 一种用于CP-CDMA系统的正交频率分组码:梳状频谱码, An Orthogonal Frequency Divided Group Code for CP-CDMA System: Comb Spectrum Code[J]. 北京大学学报自然科学版,2005.
APA	程红兵,马猛,&焦秉立.(2005).一种用于CP-CDMA系统的正交频率分组码:梳状频谱码.北京大学学报自然科学版.
MLA	程红兵,et al."一种用于CP-CDMA系统的正交频率分组码:梳状频谱码".北京大学学报自然科学版 (2005).