Title :
Random sequence multisets for synchronous code-division multiple-access channels
Author :
Grant, Alex J. ; Alexander, Paul D.
Author_Institution :
Inst. for Telecommun. Res., South Australia Univ., Pooraka, SA, Australia
fDate :
11/1/1998 12:00:00 AM
Abstract :
The effect of using randomly selected sequence multisets for the uplink of a synchronous code-division multiple-access channel is considered. A tight lower bound on the expected value of the sum capacity over the ensemble of randomly selected sequence multisets is given. For large systems, the sum rate penalty for using randomly selected multisets is shown to be at most 1 nat and to vanish as the number of users becomes large, compared to the sequence length
Keywords :
channel capacity; code division multiple access; multiuser channels; random processes; sequences; synchronisation; lower bound; random sequence multisets; randomly selected sequence multisets; sum capacity; sum rate penalty; synchronous code-division multiple-access channels; uplink; Australia; Baseband; Channel capacity; Code division multiplexing; Decoding; Multiaccess communication; Network address translation; Random sequences; Spread spectrum communication; Wireless communication;
Journal_Title :
Information Theory, IEEE Transactions on
