Summary
|
For Full-Text PDF, please login, if you are a member of IEICE, or go to Pay Per View on menu list, if you are a nonmember of IEICE. |
|
Code Acquisition in DS/CDMA Systems by Employing a Detector Based on a posteriori Probability Calculation M. Tahir Abbas KHAN Nobuoki ESHIMA Yutaka JITSUMATSU Tohru KOHDA Publication IEICE TRANSACTIONS on Communications Vol.E88-B No.10 pp.4047-4055 Publication Date: 2005/10/01 Online ISSN: DOI: 10.1093/ietcom/e88-b.10.4047 Print ISSN: 0916-8516 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: code acquisition, DS/CDMA, multiuser systems, a posteriori probability, Full Text: PDF(486KB)>>
Summary: A detector based on calculation of a posteriori probability is proposed for code acquisition in singleuser direct sequence code division multiple access (DS/CDMA) systems. Available information is used for decision making, unlike conventional methods which only use a part of it. Although this increases the overhead in terms of additional memory and computational complexity, significant performance improvements are achieved. The frame work is extended to multiuser systems and again mean acquisition time/correct acquisition probability performance is superior to the conventional systems although computational complexity is high. An approximate multiuser method with significantly less complexity is also derived. | |||||
|
