Distributed code assignments for CDMA packet radio networks

摘要: Code-division multi-access (CDMA) techniques allow many users to transmit simultaneously in the same band without substantial interference by using approximately orthogonal (low cross-correlation) spread-spectrum waveforms. Two-phase algorithms have been devised assign and reassign codes transmitters, receivers pairs of stations a large dynamic packet radio network polynomial times. The purpose code assignments is spatially reuse spreading reduce possibility collisions react dynamically topological changes. These two-phase minimize time complexity first phase number control packets needed be exchanged second phase. Therefore, they can start operation short time, then switch with goal adapting A pairwise code-assignment scheme proposed edges. Simulations based on well-controlled topologies (sparse topologies) show that requires much fewer than transmitter-based assignment, while maintaining similar throughput performance. >