Mobile - Wireless Communications White Papers
Optimal Multiple Access to Data Access Points in Tiered CDMA Systems
Overview The work discussed in this paper studies a specific two-tier CDMA system in which a microcell attracts only a small number of users and gives them high-speed access while the umbrella macrocell serves multiple simultaneous low-rate users. The microcell, referred to as a Data Access Point (DAP), operates on the same frequency as the macrocell and uses the same chip rate. The DAP users adapt their spreading factor in accordance with interference conditions, whereas the macrocell users have a fixed data rate. The analysis here presents a scheduling method that maximizes the total DAP throughput. The schedule indicates which DAP users should be given access and at what data rate.
| Publisher | Lehigh University | File Format | |
|---|---|---|---|
| Date Published | July 2005 | Downloads | 1 |
| Format | White Papers | ||
| Topics | |||
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