Title
Error rate performance improvement for a decorrelating CDMA receiver by introducing additional dummy pilot response.
Abstract
A pilot assisted CDMA system which uses extended spreading sequences with guard sequences under a quasi-synchronous condition is capable of separating the interference components included in the input of a de-correlating receiver by solving a system of linear equations. The performance of such a system, however, depends on the property of the de-correlating matrix made of the pilots responses. The regularity of the matrix often tends to degrade due to primarily the multi-paths, resulting in the solutions vulnerable to AWGN. This paper proposes an effective technique to solve this problem by introducing a dummy pilot associated with a virtual user into a group of the real users to be served. The simulation indicates a remarkable improvement in the bit-error-rate performance. In addition, it proves a RAKE like function with power-sum-characteristics.
Year
DOI
Venue
2002
10.1109/PIMRC.2002.1047348
PIMRC
Keywords
Field
DocType
AWGN channels,code division multiple access,decorrelation,error statistics,land mobile radio,matrix algebra,multipath channels,multiuser channels,radio links,radio receivers,radiofrequency interference,spread spectrum communication,AWGN,BER performance,RAKE like function,bit error rate performance,de-correlating matrix,decorrelating CDMA receiver,decorrelating receiver,dummy pilot response,extended spreading sequences,guard sequences,interference components,linear equations,mobile communication systems,multipaths,pilot assisted CDMA system,pilots response,power-sum characteristics,quasi-synchronous condition,simulation,system performance,up-link transmission,virtual user
Rake,Decorrelation,Telecommunications,Computer science,Control theory,Word error rate,Real-time computing,Interference (wave propagation),Code division multiple access,Additive white Gaussian noise,Performance improvement,Spread spectrum
Conference
Volume
Citations 
PageRank 
2
0
0.34
References 
Authors
0
4
Name
Order
Citations
PageRank
Mitsuhiro Tomita111.71
Noriyoshi Kuroyanagi2579.66
Satoru Ozawa313.40
Naoki Suehiro412015.63