Improving performance of wireless networks using Collision Resistant Modulations

G. Caire, E. Leonardi, E. Viterbo

Research output: Contribution to conferencePaper


Recent work by the authors presents a novel class of signal space codes called Collision Resistant Modulations (CRM) for bandwidth efficient transmission on a random access collision channel, as in packet-radio applications. Results show that CRMs achieve a significant gain over traditional modulation formats under a Slotted ALOHA protocol. In this paper, we investigate the potentials of using CRM under a partially ordered access protocol like Packet Reservation Multiple Access (PRMA). A system based on Reed-Solomon coded CRM is compared with a more traditional system using the same Reed-Solomon coding concatenated with simple one-dimensional modulation schemes. Results show that the proposed coded PRMA yields significant improvements in terms of both blocking probability and number of established calls (served users), at the expenses of a slight increase in the average transmitted power.

Original languageEnglish
Number of pages6
Publication statusPublished - 1 Dec 1998
Externally publishedYes
EventProceedings of the IEEE GLOBECOM 1998 - The Bridge to the Global Integration - Sydney, NSW, Aust
Duration: 8 Nov 199812 Nov 1998


ConferenceProceedings of the IEEE GLOBECOM 1998 - The Bridge to the Global Integration
CitySydney, NSW, Aust

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