ARTICLE
Year : 2011 | Volume
: 57 | Issue : 5 | Page : 478--486
Practical Blind Approach for Joint Detection and Parameter Assessment in Direct Sequence Code Division Multiple Access Systems
Javad Afshar Jahanshahi, Mohammad Eslami, Seyed Ali Ghorashi
Cognitive Telecommunications Research Group, Department of Electrical Engineering, Faculty of Electrical and Computer Engineering, Shahid Beheshti University G.C., Evin, Tehran, Iran
Correspondence Address:
Javad Afshar Jahanshahi
Cognitive Telecommunications Research Group, Department of Electrical Engineering, Faculty of Electrical and Computer Engineering, Shahid Beheshti University G.C., Evin, Tehran
Iran
In this paper, the blind code extraction of Direct Sequence Code - Division Multiple Access signals is considered based on independent component analysis (ICA), some propositions are defined in order to estimate the number of active users, to distinguish between correct and incorrect extracted codes, and also to determine the quality of detection along with the ICA-based blind detection procedure. These propositions are used to improve the performance of the ICA blind detection-based method. Principal component analysis and gaussian mixture model are employed as analyzing tools in proposed criteria. Experimental results show that the defined criteria are verified.
How to cite this article:
Jahanshahi JA, Eslami M, Ghorashi SA. Practical Blind Approach for Joint Detection and Parameter Assessment in Direct Sequence Code Division Multiple Access Systems.IETE J Res 2011;57:478-486
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How to cite this URL:
Jahanshahi JA, Eslami M, Ghorashi SA. Practical Blind Approach for Joint Detection and Parameter Assessment in Direct Sequence Code Division Multiple Access Systems. IETE J Res [serial online] 2011 [cited 2013 Jun 19 ];57:478-486
Available from: http://www.jr.ietejournals.org/article.asp?issn=0377-2063;year=2011;volume=57;issue=5;spage=478;epage=486;aulast=Jahanshahi;type=0 |
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