Copyright © 2008 The Institute of Electronics, Information and Communication Engineers
Regular Section -- Papers -- Wireless Communication Technologies |
Orthogonal Multi-Carrier DS-CDMA with Frequency-Domain Equalization
1 The authors are with the Department of Electrical and Com-munication Engineering, Graduate School of Engineering, Tohoku University, Sendai-shi, 980-8579 Japan. E-mail: tanaka{at}mobile.ecei.tohoku.ac.jp
Orthogonal multi-carrier direct sequence code division multiple access (orthogonal MC DS-CDMA) is a combination of orthogonal frequency division multiplexing (OFDM) and time-domain spreading, while multi-carrier code division multiple access (MC-CDMA) is a combination of OFDM and frequency-domain spreading. In MC-CDMA, a good bit error rate (BER) performance can be achieved by using frequency-domain equalization (FDE), since the frequency diversity gain is obtained. On the other hand, the conventional orthogonal MC DS-CDMA fails to achieve any frequency diversity gain. In this paper, we propose a new orthogonal MC DS-CDMA that can obtain the frequency diversity gain by applying FDE. The conditional BER analysis is presented. The theoretical average BER performance in a frequency-selective Rayleigh fading channel is evaluated by the Monte-Carlo numerical computation method using the derived conditional BER and is confirmed by computer simulation of the orthogonal MC DS-CDMA signal transmission.
Key Words: orthogonal MC DS-CDMA, frequency-domain equalization, frequency diversity gain
Manuscript received December 7, 2006. Manuscript revised August 26, 2007.
Reference
[1] W.C. Jakes, Jr., ed, Microwave mobile communications, Wiley, New York, 1974. [2] J.G. Proakis, Digital communications, 2nd ed., McGraw-Hill, 1995. [3] Y. Akaiwa, Introduction to digital mobile communication, Wiley-Interscience, 1997. [4] H. Meyr, M. Moeneclaey, and S.A. Fechtel, Digital communication receivers, Wiley-Interscience, 1998. [5] L. Hanzo, W. Webb, and T. Keller, Single- and Multi-carrier Quadrature Amplitude Modulation, Wiley, 2000. [6] S. Hara and R. Prasad, "Overview of multicarrier CDM," IEEE Commun. Mag., vol.35, no.12, pp.126–133, Dec. 1997. [7] S. Hara and R. Prasad, "Design and performance of multicarrier CDMA system in frequency-selective Rayleigh fading channels," IEEE Trans. Veh. Technol., vol.48, no.5, pp.1584–1595, Sept. 1999. [8] T. Sao and F. Adachi, "Comparative study of various frequency equalization techniques for downlink of a wireless OFDM-CDMA system," IEICE Trans. Commun., vol.E86-B, no.1, pp.352–364, Jan. 2003. [9] F. Adachi, D. Garg, S. Takaoka, and K. Takeda, "Broadband CDMA techniques," IEEE Wireless Commun. Mag., vol.12, no.2, pp.8–18, April 2005. [10] S. Tomasin and N. Benvenuto, "Frequency-domain interference cancellation and nonlinear equalization for CDMA systems," IEEE Trans. Commun., vol.4, no.5, pp.2329–2339, Sept. 2005. [11] H. Atarashi, A. Abeta, and M. Sawahashi, "Variable spreading factor-orthogonal frequency and code division multiplexing (VSF-OFCDM) for broadband packet wireless access," IEICE Trans. Commun., vol.E86-B, no.1, pp.291–299, Jan. 2003. [12] N. Maeda, Y. Kishihara, H. Atarashi, and M. Sawahashi, "Variable spreading factor-OFCDM with two dimensional spreading that prioritizes time domain spreading for forward link broadband wireless access," IEICE Trans. Commun., vol.E88-B, no.2, pp.487–498, Feb. 2005. [13] D.N. Rowitch and L.B. Milstein, "Rate compatible punctured turbo (RCPT) codes in hybrid FEC/ARQ system," Proc. Comm. Theory Mini-conference of GLOVECOM'97, pp.55–59, Nov. 1997. [14] D. Garg and F. Adachi, "Throughput comparison of turbo-coded HARQ in OFDM, MC-CDMA and DS-CDMA with frequency-domain equalization," IEICE Trans. Commun., vol.E88-B, no.2, pp.664–677, Feb. 2005. [15] D. Falconer, S.L. Ariyavisitakul, A. Benyamin-Seeyar, and B. Eidson, "Frequency domain equalization for single-carrier broadband wireless systems," IEEE Commun. Mag., vol.40, no.4, pp.58–66, April 2002. [16] A. Papoulis and S.U. Pillai, Probability, Random Variable and Stochastic Processes, McGraw-Hill Higher Education, 2002. [17] H. Taoka, K. Higuchi, and M. Sawahashi, "Field experiments on 2.5-Gbps packet transmission using MLD-based signal detection in MIMO-OFDM broadband packet radio Aaccess," Proc. 9th WPMC, pp.234–239, San Diego, USA, Sept. 2006. [18] L.-L. Yang and L. Hanzo, "Performance of generalized multicarrier DS-CDMA over Nakagami-m fading channels," IEEE Trans. Commun., vol.50, no.6, pp.956–966, June 2002.
CiteULike 
Connotea 
Del.icio.us What's this?
This Article 
Abstract
Full Text (PDF)
Alert me when this article is cited
Alert me if a correction is posted
Services
Email this article to a friend
Similar articles in this journal
Alert me to new issues of the journal
Add to My Personal Archive
Download to citation manager
Request Permissions
Google Scholar
Articles by TANAKA, K.
Articles by ADACHI, F.
Social Bookmarking
What's this?