| Publisher | The University of Texas at Dallas | ||
|---|---|---|---|
| Format | 68.5KB PDF, requires Acrobat Rdr 5 | Date added | 02 Feb 2003 |
| Topics | TDMA - CDMA, Mobile - Wireless Communications | ||
| Downloads | 1391  popular | ||
For multiple access systems, MAC (medium access control) protocols have primary effect the throughput and delay performance of the system. Among MAC protocols, the ALOHA scheme has enjoyed the advantage of simplicity, however, the throughput of ALOHA decreases under heavy traffic conditions. Alternative random access systems have been proposed based on code division multiple access (CDMA) systems to improve the throughput. Random access CDMA systems have been shown to efficiently allocate scarce radio communication channels (bandwidth) in such a way that users with bursty traffic can share the same frequency without significant degradation to the overall throughput.
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