Rake-Based Multiuser Detection for Quasi-Synchronous SDMA Systems
نویسندگان
چکیده
منابع مشابه
Linear Multiuser Detection for Synchronous DS-CDMA Systems
Direct sequence code division multiple access (DSCDMA) is a popular wireless technology. This system suffers from Multiple Access Interference (MAI) caused by Direct Sequence users and Near –far effect. Multi-User Detection schemes are used to detect the users’ data in presence of MAI and Nearfar problem. In this dissertation, we present comparative study between linear multiuser detectors and ...
متن کاملNonlinear Multiuser Receiver for Optimized Chaos-Based DS-CDMA Systems
Chaos based communications have drawn increasing attention over the past years. Chaotic signals are derived from non-linear dynamic systems. They are aperiodic, broadband and deterministic signals that appear random in the time domain. Because of these properties, chaotic signals have been proposed to generate spreading sequences for wide-band secure communication recently. Like conventional DS...
متن کاملBEM-based multiuser detection for synchronous DS-CDMA systems over frequency flat fading channels
In this paper a soft-in soft-output (SISO) multiuser detection algorithm for synchronous direct sequence-code division multiple access (DS-CDMA) systems operating over a slow Rayleigh fading channel is illustrated. Its derivation is based on the Bayesian Expectation Maximization (BEM) technique. The proposed detector estimates the fading channel in an iterative fashion and produces the a poster...
متن کاملGenetic Algorithm Based Antenna Diversity Assisted Multiuser Detection for Synchronous CDMA Systems
|A spatial diversity reception assisted multiuser CDMA detector based on genetic algorithms (GAs) is proposed. Two di erent diversity selection strategies are considered. In our rst approach the so-called individuals of the GA are chosen for selection based purely on the sum of their corresponding gures of merit associated with the individual antennas, an approach which is analogous to employin...
متن کاملAntenna-diversity-assisted genetic-algorithm-based multiuser detection schemes for synchronous CDMA systems
A spatial diversity reception assisted multiuser code-division multiple-access detector based on genetic algorithms (GAs) is proposed. Two different GA-based individual-selection strategies are considered. In our first approach, the so-called individuals of the GA are selected for further exploitation, based purely on the sum of their corresponding figures of merit evaluated for the individual ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Communications
سال: 2007
ISSN: 0090-6778
DOI: 10.1109/tcomm.2007.892440