It is illustrated that the proposed algorithm outperforms the MMSE.
📌 3 Key Takeaways
🎯
Objective & Hypothesis:In this paper, an Expectation-Maximization (EM) based iterative data detection method for downlink of a multicarrier system is proposed.
📊
Key Findings & Data:The performance of the resulting algorithm is compared with Minimum Mean Squared Error (MMSE) estimator in terms of Symbol Error Rate (SER) for downlink of a Multi Carrier-Code Division Multiple Access (MC-CDMA) system in the presence of frequency selective channels using computer simulations.
💡
Conclusion & Impact:It is illustrated that the proposed algorithm outperforms the MMSE.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters
Abstract
In this paper, an Expectation-Maximization (EM) based iterative data detection method for downlink of a multicarrier system is proposed. The proposed method has low computational cost when compared with the other iterative ones since it does not require any matrix inversion if the requirements on users' data are met. The performance of the resulting algorithm is compared with Minimum Mean Squared Error (MMSE) estimator in terms of Symbol Error Rate (SER) for downlink of a Multi Carrier-Code Division Multiple Access (MC-CDMA) system in the presence of frequency selective channels using computer simulations. It is illustrated that the proposed algorithm outperforms the MMSE.
🔖
Cite This Article
KABAOĞLU, N., KABAOĞLU, R. O. (2022). A COMPUTATIONAL EFFICIENT DATA DETECTION METHOD FOR DOWNLINK OF AN MC-CDMA SYSTEM. Istanbul University Journal of Electrical and Electronics Engineering, Cilt: 17 - Sayı: 2, 3497–3501. https://ajindex.com/articles/543575
K. Fazel and S. Kaiser, "Multicarrier and Spread Spectrum Systems", Wiley, U.S.A., 2003
R. Prasad, "CDMA for Wireless Personal Communications", Artech House Publishers, U.S.A. 1996
L. Vandendorpe, "Multitone Direct Sequence CDMA System in an Indoor Wireless Environment", Proc. of IEEE First Symposium of Communications and Vehicular Technology, Benelux, Delft, The Netherlands, pp. 4.1.1-4.1.8, Oct. 1993
N. Yee, J-P. Linnartz and G. Fettweis, "Multicarrier CDMA in Indoor Wireless Radio Networks", Proc. of IEEE PlMRC '93, Yokohama, Japan, pp.109-113, Sept. 1993
K. Fazel, "Performance of CDMA/OFDM for mobile communications system", Proc. IEEE International Conference on Universal Personal Communications (ICUPC'93), Ottawa, Canada, pp. 975-979, Oct. 1993
Kondo S. and Milstein L.B., "On the use of multicarrier direct sequence spread spectrum systems", Proc. IEEE Military Communications Conference (MILCOM'93), Boston, USA, pp. 52-56, Oct. 1993
A. Chouly, A. Brajal and S. Jourdan, "Orthogonal Multicarrier Techniques Applied to Direct Sequence Spread Spectrum CDMA Systems", Proc. of IEEE GLOBECOM '93, Houston, USA, pp. 1723-1728, Nov. 1993
A. K. Suharja, R. P. Astuti, L. Meylani and A. Fahmi, "Enhancment of MC-CDMA Performance System Using Rotated Modulation", IEEE International Conference on Communication, Networks and Satellite, Surabaya, Indonesia, pp. 14-17, Dec. 2016
J. Wang and Y. Wang, "Analysis performance of MCCDMA communication system based on improved Chebyshev sequence", IEEE International Conference on Computer and Communications, Chengdu, China, pp. 2277- 2280, Oct 2016
C. Kotchasarn, "Bit-error rate expression of MC-CDMA system in ?-µ fading channel", 19th International Conference on Advanced Communication Technology, pp. 128-132, Pyeongchang, Korea(South), Feb. 2017
M. Li, C. Liu, S.V. Hanly, "Procoding for the Sparsely Spread MC-CDMA Downlink with Discrete Alphabet Inputs", IEEE Trans. On Vehicular Technology, vol. 66, no. 2, pp. 116-1129, 2017
V. Kuhn, "Combined MMSE-PIC in coded OFDM systems", Proceedings of the IEEE Global Conference on Telecommunications,San Antonia, Tex, USA, pp. 231-235, November 2001
N. Kabaoğlu, "SAGE based suboptimal receiver for downlink MC-CDMA systems ", IEEE Commun. Letters, vol. 15, no. 12, pp. 1381-1383, 2011
A. Kocian and B. H. Fleury, "EM-based joint data detection and channel estimation of DS-CDMA signals", IEEE Trans. on Commun., vol. 51,