Title :
An asynchronous CDMA scheme with iterative decoding for high bandwidth efficiency
Author :
Tarkoy, Felix ; Loeliger, Hans-Andrea
Author_Institution :
Endora Tech. AG, Basel, Switzerland
Abstract :
We propose an asynchronous CDMA system, where the users´ symbol alphabet is matched to the desired bandwidth efficiency and where the spreading factor (roughly) equals the number of users. Simulations using iterative decoding with soft cancellation indicate that bandwidth efficiency can come close to a comparable single-user system
Keywords :
code division multiple access; iterative decoding; land mobile radio; pulse amplitude modulation; spread spectrum communication; asynchronous CDMA scheme; high bandwidth efficiency; iterative decoding; simulations; single-user system; soft cancellation; spreading factor; symbol alphabet; wireless CDMA system; Bandwidth; Base stations; Convolutional codes; Error analysis; Feeds; Interference; Iterative decoding; Multiaccess communication; Probability distribution; Random sequences;
Conference_Titel :
Information Theory, 1998. Proceedings. 1998 IEEE International Symposium on
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-5000-6
DOI :
10.1109/ISIT.1998.709031
