Performance Analysis of an Uplink Miso-cdma System Using Multistage Multi-user Detection Scheme with V-blast Signal Detection Algorithms
نویسندگان
چکیده
This paper investigates the Weighted Linear Parallel Interference Cancellation (WLPIC) Multiuser Detection (MUD) scheme with Vertical-Bell Laboratories Layered Space-Time (V-BLAST) signal detection algorithms in uplink Code Division Multiple Access based Multiple Input Single Output (MISOCDMA) system. The Bit error rate performance of WLPIC scheme with V-BLAST signal detection and Conventional Linear Parallel Interference Cancellation (CLPIC) scheme with V-BLAST signal detection are compared in both correlated and uncorrelated Rayleigh fading channels. The simulation results show that the uplink MISO-CDMA system performs well with WLPIC MUD scheme and MMSE-SIC signal detection when compared with CLPIC MUD scheme and ZF-SIC signal detection in different channel conditions.
منابع مشابه
Performance of Parallel Interference Cancellation Technique in Multistage Multiuser Detection for DS-CDMA System
The 3 generation mobile communication system will base on Code Division Multiple Access (CDMA) system, because CDMA system can provide more capacity than TDMA and FDMA systems. But signal will suffer from the interference called Multiple Access Interference (MAI).This problem can be reduced by using multi-user detection technique. This paper examines the Performance of Parallel Interference Can...
متن کاملA Novel Multi-user Detection Approach on Fluctuations of Autocorrelation Estimators in Non-Cooperative Communication
Recently, blind multi-user detection has become an important topic in code division multiple access (CDMA) systems. Direct-Sequence Spread Spectrum (DSSS) signals are well-known due to their low probability of detection, and secure communication. In this article, the problem of blind multi-user detection is studied in variable processing gain direct-sequence code division multiple access (VPG D...
متن کاملAchieving high capacities in CDMA systems using multiuser detection based on BLAST
In this paper, we investigate the use of layered spacetime scheme, known as V-BLAST, for multiuser detection over the uplink of a DS/CDMA communication system. The multiple transmit antennas in V-BLAST are treated as individual mobile station transmitters, while the base station consists of multiple receive antennas. The layered space-time algorithm is then invoked to detect the signals from al...
متن کاملFrequency-Domain Multi-Stage Soft Interference Cancellation for DS-CDMA Uplink Signal Transmission
It is well-known that, in DS-CDMA downlink signal transmission, frequency-domain equalization (FDE) based on minimum mean square error (MMSE) criterion can replace rake combining to achieve much improved bit error rate (BER) performance in severe frequencyselective fading channel. However, in uplink signal transmission, as each user’s signal goes through a different channel, a severe multi-user...
متن کاملFrequency-Domain Block Signal Detection of Multi-Code DS-CDMA Signals
In this paper, we propose a block signal detection scheme, which combines frequency-domain equalization and signal detection scheme developed for the multiple-input multiple-output (MIMO) multiplexing, for the reception of the multi-code direct sequence code division multiple access (DSCDMA) signals. The proposed signal detection scheme is described first. Then, we evaluate, by computer simulat...
متن کامل