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

[1] Low complexity frequency domain equalization for cyclic prefix CDMA systems
Al-Kamali, F. S.
Dessouky, M. I.
Sallam, B. M.
El-Samie, F. E. Abd
[J]. PROCEEDINGS OF THE 25TH NATIONAL RADIO SCIENCE CONFERENCE: NRSC 2008, 2008,
[2] Partial parallel interference cancellation with frequency domain equalization for cyclic-prefix CDMA downlink
Cao, Lei
Xu, Guoping
Zhang, Xin
Yang, Dacheng
[J]. 2007 IEEE 18TH INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOLS 1-9, 2007, : 1910 - 1914
[3] Cyclic-prefix CDMA with antenna diversity
Vook, FW
Thomas, TA
Baum, KL
[J]. IEEE 55TH VEHICULAR TECHNOLOGY CONFERENCE, VTC SPRING 2002, VOLS 1-4, PROCEEDINGS, 2002, : 1002 - 1006
[4] Transmit array processing for cyclic-prefix CDMA
Vook, FW
Thomas, TA
Baum, KL
[J]. IEEE 56TH VEHICULAR TECHNOLOGY CONFERENCE, VTC FALL 2002, VOLS 1-4, PROCEEDINGS, 2002, : 270 - 274
[5] Low Complexity Time Domain Equalization for Cyclic Prefix Multicode CDMA
Valente, Daniela
Cianca, Ernestina
Ruggieri, Marina
Prasad, Ramjee
[J]. MULTIPLE ACCESS COMMUNICATIONS, 2011, 6886 : 97 - 106
[6] Frequency-domain equalization using iterative channel estimation for high-speed transmission with cyclic-prefix MC-DS-CDMA
Zhao, YF
Zhao, M
Zhou, SD
Wang, J
[J]. PIMRC 2003: 14TH IEEE 2003 INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS PROCEEDINGS, VOLS 1-3 2003, 2003, : 666 - 669
[7] Joint Frequency-Domain Equalization and Despreading for DS-CDMA Cyclic Delay Transmit Diversity
Yamamoto, Tetsuya
Takeda, Kazuki
Adachi, Fumiyuki
[J]. 2008 14TH ASIA-PACIFIC CONFERENCE ON COMMUNICATIONS, (APCC), VOLS 1 AND 2, 2008, : 450 - 454
[8] Frequency domain probabilistic data association equalizer for OFDM systems without cyclic-prefix
Parsaeefard, Saeedeh
Amindavar, Hamidreza
[J]. TENCON 2006 - 2006 IEEE REGION 10 CONFERENCE, VOLS 1-4, 2006, : 883 - +
[9] Iterative Frequency-Domain Channel Estimation and Equalization for Single-Carrier Transmissions without Cyclic-Prefix
Liu, Hong
Schniter, Philip
[J]. IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2008, 7 (10) : 3686 - 3691
[10] Iterative frequency-domain channel estimation and equalization for single-carrier transmissions without cyclic-prefix
Liu, Hong
Schniter, Philip
[J]. 2007 41ST ANNUAL CONFERENCE ON INFORMATION SCIENCES AND SYSTEMS, VOLS 1 AND 2, 2007, : 829 - 834

← 1 2 3 4 5 →