Theoretical Analysis of the Capacity Controlled Digital Mobile System in the Presence of Interference and Thermal Noise

Hee-Jin LEE  Shozo KOMAKI  Norihiko MORINAGA  

IEICE TRANSACTIONS on Communications   Vol.E75-B   No.6   pp.487-493
Publication Date: 1992/06/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Communication Theory)
capacity controlled transmission,  thermal noise,  co-channel interference,  multi-level modulation,  mobile communication,  reuse distance,  fading channel,  

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This paper analyzes the performance of the capacity controlled digital radio system, which controls the number of modulation levels according to the amount of traffic. These analyses are performed under thermal noise and co-channel interference. As a result, the throughput improvement is approximately 16 times comparing with the fixed capacity system which has the designed outage probability of 0.1%. Theoretical results are applied to the future mobile communication system which utilizes TDMA access method or burst co-dec, and it is found that the reuse distance can be improved to 1/5 times when the designed outage probability is 0.1%.