Paper Info
Title
An improved Gaussian approximation for probability of bit-error analysis of asynchronous bandlimited DS-CDMA systems with BPSK spreading
Abstract
This paper analyzes probability of bit-error (Pe) performance of asynchronous bandlimited direct-sequence code-division multiple-access systems with binary phase-shift keying spreading. The two present methods of Pe analysis under bandwidth-efficient pulse shaping: the often-cited standard Gaussian approximation and the characteristic function (CF) method suffer from either a low accuracy in regions of low Pe (< 10-3) or a prohibitively large computational complexity. The paper presents an alternate method of Pe analysis with moderate computational complexity and high accuracy based on a key observation. A sequence of chip decision statistics (whose sum yields a bit statistic) forms a stationary, m-dependent sequence when conditioned on the chip delay and phase offset of each interfering signal. This observation permits the generalization of the improved Gaussian approximation previously derived for the rectangular pulse and the derivation of a numerically efficient approximation based on the CF method. Numerical examples of systems using the square-root raised-cosine and IS-95 pulses illustrate THE P e performance, user capacity and the accuracy of the proposed method
Year
DOI
Venue
2002
10.1109/TWC.2002.800536
Wireless Communications, IEEE Transactions  
Keywords
Field
DocType
AWGN channels,Gaussian processes,approximation theory,bandlimited communication,code division multiple access,computational complexity,delays,error statistics,multiuser channels,phase shift keying,pulse shaping,radiofrequency interference,sequences,spread spectrum communication,AWGN channels,BPSK spreading,Gaussian approximation,IS-95 pulses,asynchronous bandlimited DS-CDMA systems,bandwidth-efficient pulse shaping,binary phase-shift keying,bit statistic,bit-error probability,characteristic function method,chip decision statistics,chip delay,computational complexity,direct-sequence code-division multiple-access,improved Gaussian approximation,interfering signal,multiaccess interference,phase offset,rectangular pulse,square-root raised-cosine pulse,stationary m-dependent sequence
Bandlimiting,Characteristic function (probability theory),Algorithm,Approximation theory,Real-time computing,Pulse shaping,Theoretical computer science,Gaussian process,Mathematics,Computational complexity theory,Phase-shift keying,Spread spectrum
Journal
Volume
Issue
ISSN
1
3
1536-1276
Citations 
PageRank 
References 
19
1.16
11
Authors
1
Name
Order
Citations
PageRank
Y. C. Yoon120324.14