Comparison of Multi-User Detectors of DS-CDMA System
DS-CDMA system is well known wireless
technology. This system suffers from MAI (Multiple Access
Interference) caused by Direct Sequence users. Multi-User Detection
schemes were introduced to detect the users- data in presence of
MAI. This paper focuses on linear multi-user detection schemes used
for data demodulation. Simulation results depict the performance of
three detectors viz-conventional detector, Decorrelating detector and
Subspace MMSE (Minimum Mean Square Error) detector. It is seen
that the performance of these detectors depends on the number of
paths and the length of Gold code used.
[1] S. Verdu "Minimum Probability Of Error For Asynchronous Gaussian
Multiple Access Channel". IEEE Transactions on Information Theory,
Vol. IT-32, pp.85-96, Jan 1986.
[2] R Lupas and S. Verdu "Linear Multiuser Detectors for Synchronous
Code Division Multiple Access Channels "IEEE Transactions on
Information Theory, Vol. 35, pp. 23-136, Jan 1989.
[3] Z. Xie , R. T. Short and C. K. Rushforth " A Family Of Suboptimum
Detectors for Coherent Multiuser Communications "IEEE Journal on
Selected Areas In Communications, Vol. 8, pp. 683-690, May 1990.
[4] M. Honig, U. Madhow and S. Verdu "Blind Multiuser Detection" IEEE
Transactions on Information Theory, Vol.41, pp. 944-960, July 1995.
[5] X. Wang and H. V. Poor "Blind Multiuser Detection: A Subspace
Approach", IEEE Transactions On Information Theory, Vol.44, pp.677-
690, Mar 1998.
[1] S. Verdu "Minimum Probability Of Error For Asynchronous Gaussian
Multiple Access Channel". IEEE Transactions on Information Theory,
Vol. IT-32, pp.85-96, Jan 1986.
[2] R Lupas and S. Verdu "Linear Multiuser Detectors for Synchronous
Code Division Multiple Access Channels "IEEE Transactions on
Information Theory, Vol. 35, pp. 23-136, Jan 1989.
[3] Z. Xie , R. T. Short and C. K. Rushforth " A Family Of Suboptimum
Detectors for Coherent Multiuser Communications "IEEE Journal on
Selected Areas In Communications, Vol. 8, pp. 683-690, May 1990.
[4] M. Honig, U. Madhow and S. Verdu "Blind Multiuser Detection" IEEE
Transactions on Information Theory, Vol.41, pp. 944-960, July 1995.
[5] X. Wang and H. V. Poor "Blind Multiuser Detection: A Subspace
Approach", IEEE Transactions On Information Theory, Vol.44, pp.677-
690, Mar 1998.
@article{"International Journal of Electrical, Electronic and Communication Sciences:49433", author = "Kavita Khairnar and Shikha Nema", title = "Comparison of Multi-User Detectors of DS-CDMA System", abstract = "DS-CDMA system is well known wireless
technology. This system suffers from MAI (Multiple Access
Interference) caused by Direct Sequence users. Multi-User Detection
schemes were introduced to detect the users- data in presence of
MAI. This paper focuses on linear multi-user detection schemes used
for data demodulation. Simulation results depict the performance of
three detectors viz-conventional detector, Decorrelating detector and
Subspace MMSE (Minimum Mean Square Error) detector. It is seen
that the performance of these detectors depends on the number of
paths and the length of Gold code used.", keywords = "Cross Correlation Matrix, MAI, Multi-UserDetection, Multipath Effect.", volume = "1", number = "10", pages = "1424-3", }