Bin Cao
ABSTRACT
A novel and robust subspace-based blind adaptive detector for synchronous CDMA systems based on oblique projection is proposed in this paper, in respect that the oblique projection can be used to extract desired signal while nulling interferences. The suggested method requires the assumption that the desired user's spreading code and noise variance of AWGN are known to the receiver rather than the assumption that all users' spreading codes are known to the receiver in conventional subspace-based detection, and this assumption can be obtained more realistic. When the noise variance of AWGN is not available, the rank-reduced form is also given. It is shown that this detector performs a perfect rejection of MAI. It is known that the subspace-based approach is robust to the near-far effect, thus the proposed scheme based on this property is immune to the near-far effect.
- R. T. Behrens, and L. L. Scharf, "Signal processing applications of oblique projection operators," IEEE Trans. on Signal Processing., vol. 42, no. 6, pp. 1413--1424, 1994.Google Scholar
Digital Library
- Yong-Suk Moon, and Mostafa Kaveh, "Subspace-based noncoherent detection for CDMA communications," Proceddings of SPAWC 1999, vol. 6, pp. 3201--3204, 1998.Google Scholar
- Yong-Suk Moon, M. Kaveh, L. B. Nelson, "Subspace-based detection for CDMA communications," Proceddings of ICASSP 1999, pp. 182--185, 1999.Google Scholar
- Michael L. McCloud and Louis L. Scharf, "A new subspace identification algorithm for high-resolution DOA estimation," IEEE Trans. on Antennas and Propagation., vol. 50, no. 10, pp. 1382--1390. 2002Google ScholarCross Ref
- Zhang Q. Y, Cao B, Wang J, and Zhang N. T, "Polarization Filtering Technique Based on Oblique Projections," to appear in Science in China, Series F: Information SciencesGoogle Scholar
- Bin Cao, and Qin-Yu Zhang, "Blind signal separation using oblique projections method," to appear in ChinaCOM 2009 Proceddings.Google Scholar
- Bin Cao, and Qin-Yu Zhang, "Oblique projectors based blind source separation," to appear in WiCOM 2009 Proceddings. Google ScholarDigital Library
- Jingxian Wu, Chengshan Xiao, and Khaled B. Letaief, "Estimation of Additive Noise Variance for Multiuser CDMA Systems," ICCCAS 2005, vol. 1, 27--30, pp. 170--174. May 2005.Google Scholar
- R. Gaudel, F. Bonnet, J. B. Domelevo-Entfellner and A. Roumy, "Noise Variance Estimation in DS-CDMA and Its Effects on The Individually Optimum Receiver," IEEE SPAWC 2006, pp. 1--5, July 2006.Google Scholar
- Justin Coon, Magnus Sandell, Mark Beach and Joe McGeehan, "Channel and Noise Variance Estimation and Tracking Algorithms for Unique-Word Based Single-Carrier Systems," IEEE Trans. on wireless communications vol. 5, no. 6, June 2006. Google ScholarDigital Library
- Lin Yang, Kwok-Kai Soo, Yun-Mng Siu, and Ru-Shan Chen, "Hybrid Reduced-Complexity Multiuser Detector for CDMA Communication Systems," IEEE Trans. on Vehicular technology, vol. 57, Issue 1, pp. 414--420, Jan 2008.Google ScholarCross Ref
Index Terms
- Subspace-based blind adaptive detector for synchronous CDMA systems
Recommendations
An Adaptive MMOE-PIC Detector for Asynchronous DS-CDMA Communications
AbstractWe propose a modified linear parallel interference cancelation (PIC) structure using the adaptive minimum mean output-energy (MMOE) algorithm for direct-sequence code-division multiple-access (DS-CDMA) systems. The complexity of the proposed ...
Receiver multiuser diversity aided multi-stage minimum mean-square error detection for heavily loaded DS-CDMA and SDMA systems
By investigating the conditions required for successive interference cancellation multiuser detectors (SIC-MUD) to achieve near-optimum BER performance, we propose and investigate a so-called receiver multiuser diversity aided multi-stage minimum mean-...
New bounds on RAKE structures for DS-CDMA over frequency-selective Rayleigh fading channels
SSAP '96: Proceedings of the 8th IEEE Signal Processing Workshop on Statistical Signal and Array Processing (SSAP '96)An upper bound is derived for the probability of error in an asynchronous binary direct-sequence spread-spectrum multiple-access communications system operating over frequency selective Rayleigh fading channels. A coherent RAKE receiver with ...
Comments