| Author | Nguyen Tuan Anh |
| Call Number | AIT RSPR no. TC-98-7 |
| Subject(s) | Code division multiple access
|
| Note | A research study submitted in partial fulfillment of the requirements for the degree of Master of
Engineering, School of Advanced Technologies |
| Publisher | Asian Institute of Technology |
| Abstract | Multiuser detection allows for the efficient use of bandwidth in code division multiple
access (CDMA) channels through mitigation of near-far effects and multiple access interference
(MAI). However there are several obstacles preventing the use of multiuser detection techniques
in practical CDMA, among them, the major obstacle is the receiver complexity. Several multiuser
detector schemes have been proposed in the literature in an attempt to give the most suitable
detector for use in practical CDMA system. In this study, the multiuser detection techniques have
been reviewed. Then by applying the optimum multiuser detection technique, the performance of
the coded CDMA system has been evaluated in term of bit error rate under AWGN and Rayleigh
flat fading channel. The receiver model is a joint multiuser detector and channel decoder scheme,
working in an iterative manner. The performance of the multiuser detector has been improved by
the use of forward error correction codes. The newly proposed soft in soft out maximum a
posteriori algorithm has been adapted to use for multiuser detector. Finally the effect of trellis
termination for multiple access channel trellis are also investigated. |
| Year | 1998 |
| Type | Research Study Project Report (RSPR) |
| School | School of Advanced Technologies |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Telecommunications (TC) |
| Chairperson(s) | Rajatheva, R.M.A.P; |
| Examination Committee(s) | Ahmed, Kazi Mohiuddin;Makelainen, Kimmo |
| Scholarship Donor(s) | Government of Finland ; |
| Degree | Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 1998 |