Paper Info
Title
Comparison of multiple access interference in asynchronous MC-CDMA and DS-CDMA systems
Abstract
In this paper we make a comparison between the multiple access interference (MAI) incurred in asynchronous multicarrier code division multiple access (MC-CDMA) and direct-sequence code division multiple access (DS-CDMA) systems for uplink satellite communications. Using a symbol by symbol recovery approach, we characterize the MAI produced by both systems in the absence of additive channel noise. For a given set of transmission offsets, the bit-error-rate (BER) is computed, and analyzed for an increasing number of users. This analysis has been performed for codelength's of N = 8 (using Walsh-Hadamard codes) and N = 7 (using Gold codes). Simulations show that, on average, the MC-CDMA scheme outperforms DS-CDMA in an asynchronous non-selective environment for the spreading codes considered.
Year
DOI
Venue
2003
10.1109/ISSPA.2003.1224886
Signal Processing and Its Applications, 2003. Proceedings. Seventh International Symposium
Keywords
Field
DocType
Hadamard codes,code division multiple access,error statistics,radiofrequency interference,satellite communication,spread spectrum communication,DS-CDMA systems,Gold codes,Walsh-Hadamard codes,asynchronous MC-CDMA systems,asynchronous nonselective environment,bit-error-rate,direct-sequence code division multiple access systems,multicarrier code division multiple access systems,multiple access interference,spreading codes,symbol by symbol recovery approach,uplink satellite communications
Telecommunications,Computer science,Fading,Artificial intelligence,Bit error rate,Spread spectrum,Asynchronous communication,Pattern recognition,Algorithm,Chip,Code division multiple access,Telecommunications link,Gold code
Conference
Volume
ISBN
Citations 
2
0-7803-7946-2
1
PageRank 
References 
Authors
0.38
3
3
Name
Order
Citations
PageRank
Daniel Carey110.72
Daniel Roviras242453.96
Bouchra Senadji318620.93