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The Coded Tone Sense Protocol for Multihop Spread Spectrum Packet Radio Networks
Kwok-Wah HUNG Tak-Shing YUM
IEICE TRANSACTIONS on Communications
Publication Date: 1994/01/25
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Radio Communication
communication protocol, packet radio networks,
Full Text: PDF(375.7KB)>>
In Spread Spectrum Packet Radio Networks (SS/PRNs), different spreading codes are required for different stations for transmitting packets. Therefore multihop SS/PRNs with a large number of stations would require a large number of codes and hence a large channel bandwidth. In this paper we design a code assignment algorithm which could reduce the number of codes required to about 22%. Further reducing the number of codes is found to cause little throughput degradation. The Coded Tone Sense protocol is designed for using these codes in multihop PRNs. Simulation result shows that in a 80 node network using only 5 spreading codes, the maximum network throughput is about 73% higher than the BTMA protocol.