Comparative Study of Different Space-Time Coding Schemes for MC-CDMA Systems
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Abstract
In this paper, performance of space-time trellis-code (STTC), space-time block code (STBC), and space-time trellis-code concatenated with space-time block code (STTC-STBC) for multi-carrier code-division multiple-access (MC-CDMA) system are studied. These schemes are considered by employing different detection techniques with various multi input multi output (MIMO) antenna diversity for different number of states in multi-path fading channel. The corresponding bit error rate (BER) is obtained using simulation for minimum mean-square error (MMSE), maximum-ratio combining (MRC), and equal-gain combining (EGC) receivers employing Viterbi decoder. The simulation results show that the STTC-STBC MC-CDMA system perform better compared to other schemes considered in this paper using MMSE detection and it is also observed that the performance can also be enhanced by increasing diversity using more transmitter and receiver antennas. However, this improvement in performance comes at the cost of increased computational complexity, which is calculated for different transmitting and receiving antennas.
- V. Tarokh, N. Seshadri and A. R. Calderbank, “Space- Time Codes for High Data rate Wireless Communication: Performance Criterion and Code Construction,” IEEE Transactions on Information Theory, Vol. 44, No. 2, March 1998, pp. 744-765.
- H. Sampath, S. Talwar and J. Tellado, “A Fourth Generation MIMO-OFDM Broadband Wireless System: Design, Performance, and Field Trial Results,” IEEE Communication Magazine, September 2002, pp. 143-149.
- M. Juntti, M. Vehkapera, J. Leinonen, “MIMO MC-CD- MA Communications for Future Cellular Systems,” IEEE Communication Magazine, Feburary 2005, pp. 118-124.
- S. Hijazi, B. Natarajan and Z. Wu., “Flexible Spectrum use and Better Coexistence at the Physical Layer of Future Wireless Systems via a Multicarrier Platform,” IEEE Wireless Communication, April 2004, pp. 64-71.
- E. A. Sourour and Masao Nakagawa, “Performance of Orthogonal Multicarrier CDMA in a Multipath Fading Channel,” IEEE Transactions on Communications, Vol. 44, No. 3, March 1996, pp. 356-366.
- S. Hara and R. Prasad, “An Overview of Multi-Carrier CDMA,” IEEE Communication Magazine, Vol. 35, No. 12, December 1997, pp. 126-133.
- S. L. Miller and B. J. Rainbolt, “MMSE Detection of Multicarrier CDMA,” IEEE Journal on Selected Areas in Communications, Vol. 18, No. 11, November 2000, pp. 2356-2362.
- K. K. Wong, R. D. Murch and K. B. Letaief, “Perform ance Enhancement of Multiuser MIMO Wireless Communication Systems,” IEEE Transactions on Communications, Vol. 50, No. 12, December 2002, pp. 1960-1968.
- A. F. Naguib, V. Tarokh, N. Seshadri and A. R. Calderb- ank, “A Space-Time Coding Modem for High-Data-Rate Wireless Communications,” IEEE Journal on Selected Areas in Communication, Vol. 16, No. 8, October 1998, pp. 1459-1478.
- S. M. Alamouti, “A Simple Transmit Diversity Technique for Wireless Communications,” IEEE Journal on Selected Areas in Communications, Vol. 16, No. 8, October 1998, pp. 1451-1458.
- A. Trivedi and M. Bansal, “Adaptive Equalization of Space-Time Coded MC-CDMA Systems,” Communication, Computers and Signal Processing, IEEE Pacific Rim, 22-24 August 2007, pp. 186-189.
- W. Sun, H. B. Li and M. Amin, “A Subspace-Based Channel Identification Algorithm for Forward Link in Space-Time Coded MC-CDMA Systems,” IEEE Proceedings, 2002, pp. 445-448.
- F. S. Ostuni, M. R. Nakhai and H. Aghvami, “Iterative Multi-User MMSE Receiver for Space-Time Trellis Co- ded CDMA over Frequency Selective Channels,” IEEE 14th International Symposium on Personal, Indore and Mobile Radio Communication Proceedings, Chennai 2003, pp. 1968-1972.