DocumentCode :
1289156
Title :
Packet radio performance of inhibit sense multiple access with capture
Author :
Zdunek, Kenneth J. ; Ucci, Donald R. ; LoCicero, Joseph L.
Author_Institution :
Commun. Sect., Motorola Inc., Schaumburg, IL, USA
Volume :
45
Issue :
2
fYear :
1997
fDate :
2/1/1997 12:00:00 AM
Firstpage :
164
Lastpage :
167
Abstract :
Current portable and land-mobile radio systems employ frequency modulation which exhibits a distinct capture effect. Furthermore, multipath propagation, shadowing, and the spatial distribution of the terminal units create data packets with varying signal strength. We investigate the performance of nonpersistent inhibit sense multiple access (ISMA) applied to the forward channel of packet radio communication networks. We show that the aggregate capacity of ISMA substantially increases compared to the noncapture case for small capture ratios. The mean packet delay of ISMA is also reduced with capture. The effect of different signal strength distribution is explored, and the capacity and delay improvements discussed
Keywords :
channel capacity; data communication; delays; frequency modulation; land mobile radio; mobile radio; multi-access systems; multipath channels; packet radio networks; aggregate capacity; capacity improvement; capture effect; data packets; delay improvement; forward channel; frequency modulation; land mobile radio systems; mean packet delay; multipath propagation; nonpersistent inhibit sense multiple access; packet radio communication networks; packet radio performance; portable radio systems; shadowing; signal strength distribution; small capture ratios; spatial distribution; terminal units; varying signal strength; Aggregates; Base stations; Communication networks; Delay effects; Frequency modulation; Multiaccess communication; Packet radio networks; Shadow mapping; Signal design; Throughput;
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/26.554364
Filename :
554364
Link To Document :
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