The DOI matches its Crossref record; 16 of the 16 references it cites were found in a registry or an index.
Quasi-maximum-likelihood multiuser detection using semi-definite relaxation with application to synchronous CDMA
Abstract
The maximum-likelihood (ML) multiuser detector is well known to exhibit better bit-error-rate (BER) performance than many other multiuser detectors. Unfortunately,ML detection (MLD) is a nondeterministic polynomial-time hard (NP-hard) problem, for which there is no known algorithm that can find the optimal solution with polynomial-time complexity (in the number of users). In this paper, a polynomial-time approximation method called semi-definite (SD) relaxation is applied to the MLD problem with antipodal data transmission. SD relaxation is an accurate approximation method for certain NP-hard problems. The SD relaxation ML (SDR-ML) detector is efficient in that its complexity is of the order of K3.5, where K is the number of users. We illustrate the potential of the SDR-ML detector by showing that some existing detectors, such as the decorrelator and the linear-minimum-mean-square-error detector, can be interpreted as degenerate forms of the SDR-ML detector. Simulation results indicate that the BER performance of the SDR-ML detector is better than that of these existing detectors and is close to that of the true ML detector, even when the cross-correlations between users are strong or the near-far effect is significant.
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Cited by
Semidefinite Relaxation of Quadratic Optimization Problems
Luo, Z.-Q., Ma, W.-K., So, A., Ye, Y., & Zhang, S. (2010) · IEEE Signal Processing Magazine · doi:10.1109/msp.2010.936019 · Cited by 3,715
Self-citationMIMO Transceiver Design via Majorization Theory
Palomar, D. P., & Jiang, Y. (2007) · Foundations and Trends in Communications and Information Theory · doi:10.1561/0100000018 · Cited by 320
High-performance combinatorial optimization based on classical mechanics
Goto, H., Endo, K., Suzuki, M., Sakai, Y., Kanao, T., Hamakawa, Y., Hidaka, R., Yamasaki, M., & Tatsumura, K. (2021) · Science Advances · doi:10.1126/sciadv.abe7953 · Cited by 231
Metadata
- Authors
- Ma, W.-K., Davidson, T. N., Wong, K. M., Luo, Z.-Q., & Ching, P.-C.
- Venue
- IEEE Transactions on Signal Processing
- Published
- 2002-04
- Volume
- 50
- Issue
- 4
- Pages
- 912-922
- ISSN
- 1053-587X (ISSN-L)
- OpenAlex
- W2134376819
- Cited by
- 346
- References
- 16
- FWCI
- 21.96
- Type
- journal article
- Language
- en
- Open access
- closed
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- Ma, W.-K., Davidson, T. N., Wong, K. M., Luo, Z.-Q., & Ching, P.-C. (2002). Quasi-maximum-likelihood multiuser detection using semi-definite relaxation with application to synchronous CDMA. IEEE Transactions on Signal Processing. https://doi.org/10.1109/78.992139
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