Low complexity frequency-domain despreading for cyclic-prefix CDMA systems

被引：6

作者：

Lin, PH ^{[1
]}

Chiueh, TD ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Elect Engn, Taipei 10617, Taiwan

来源：

IEEE COMMUNICATIONS LETTERS | 2004年 / 8卷 / 06期

关键词：

code division multiple access (CDMA); cyclic-prefix; frequency-domain despreading; fast Fourier transform (FFT);

D O I：

10.1109/LCOMM.2004.828176

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

In this letter, a frequency-domain despreading method for the cyclic-prefix code-division multiple-access (CP-CDMA) system is introduced. Using the orthogonality transformation property of the discrete Fourier transform (DFT), we can despread the received CP-CDMA, signals in the frequency domain. Moreover, we propose an efficient architecture for the proposed frequency-domain despreader. Comparison with the conventional time-domain despreading approach shows that the proposed architecture can save a large amount of computation. The proposed scheme is therefore suitable for efficient implementation of CP-CDMA receivers that adopt frequency-domain equalization and despreading.

引用

页码：339 / 341

页数：3

共 50 条

[41] An efficient cyclic prefix reconstruction technique for MIMO single-carrier frequency-domain equalization
Kim, Min-Sung
Lim, Jong-Bu
Park, Seung-Yong
Im, Gi-Hong
IEEE COMMUNICATIONS LETTERS, 2007, 11 (04) : 316 - 318
[42] A cautionary view of the use of cyclic prefix on CDMA systems
Panazio, Cristiano
Bellanger, Maurice
2006 IEEE 7TH WORKSHOP ON SIGNAL PROCESSING ADVANCES IN WIRELESS COMMUNICATIONS, VOLS 1 AND 2, 2006, : 174 - 178
[43] Multicarrier CDMA systems using time-domain and frequency-domain spreading codes
You, CW
Hong, DS
IEEE TRANSACTIONS ON COMMUNICATIONS, 2003, 51 (01) : 17 - 21
[44] A novel fractionally spaced frequency domain equalization scheme for single carrier cyclic prefix assisted MIMO-CDMA systems
Li, Baojin
Wang, Qixing
Chang, Yongyu
Yang, Dacheng
2007 IEEE 65TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-6, 2007, : 1510 - 1514
[45] Low complexity frequency domain equalization of MIMO channels with applications to MIMO-CDMA systems
Burg, A
Rupp, M
Haene, S
Perels, D
Felber, N
Fichtner, W
2003 IEEE 58TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS1-5, PROCEEDINGS, 2003, : 468 - 472
[46] TURBO AIDED CYCLIC PREFIX RECONSTRUCTION FOR CODED SINGLE-CARRIER SYSTEMS WITH FREQUENCY-DOMAIN EQUALIZATION (SC-FDE)
Wei Shengqun Wu Qihui Wang Jinlong (Institute of Communication Engineering
JournalofElectronics(China), 2007, (06) : 726 - 731
[47] Cyclic-prefix based noise variance and power delay profile estimation for OFDM systems
Cui, T
Tellambura, C
2005 IEEE PACIFIC RIM CONFERENCE ON COMMUNICATIONS, COMPUTERS AND SIGNAL PROCESSING (PACRIM), 2005, : 518 - 521
[48] Time-domain multiuser detection for MC-CDMA systems without cyclic prefix
Wu, XJ
Yin, QY
Zhang, JG
Deng, K
2002 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-5, CONFERENCE PROCEEDINGS, 2002, : 921 - 925
[49] ON THE COMPLEXITY OF FREQUENCY-DOMAIN ADAPTIVE FILTERING
JABLON, NK
IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1991, 39 (10) : 2331 - 2334
[50] Frequency-domain equalization for block CDMA transmission
Adachi, F.
Nakajirna, A.
Takeda, K.
Liu, L.
Tomeba, H.
Fukuda, K.
MULTI-CARRIER SPREAD SPECTRUM 2007, 2007, 1 : 1 - +

← 1 2 3 4 5 →