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Slotted ALOHA mobile packet communication systems with multiuser detection in a base station

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2 Author(s)
Shinomiya, T. ; Canon Inc., Tokyo, Japan ; Suzuki, H.

A slotted ALOHA mobile packet communication system utilizing the multiuser detection (MD) is proposed for system enhancement. MD can be easily implemented by using an adaptive interference canceler. Employment of MD enables simultaneous detection of several collision packets, which results in system enhancement increasing the throughput and shortening the average delay time. Detailed theoretical analysis and computer simulation with a two-user simultaneous detection in a single-cell environment shows: (1) the throughput increases twice as much as the conventional one and (2) the average delay time decreases by 50%

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Vehicular Technology, IEEE Transactions on  (Volume:49 ,  Issue: 3 )