DocumentCode :
1152850
Title :
Optimizing information efficiency in a direct-sequence mobile packet radio network
Author :
Chandra, Madhavi W. ; Hughes, Brian L.
Author_Institution :
Cisco Syst., Research Triangle Park, NC, USA
Volume :
51
Issue :
1
fYear :
2003
fDate :
1/1/2003 12:00:00 AM
Firstpage :
22
Lastpage :
24
Abstract :
We consider a direct-sequence multihop packet radio network using slotted ALOHA in a Rayleigh fading environment. We are interested in optimally choosing the transmission range, code rate, and slotted ALOHA transmission probability to be used by each node. We use a new performance measure, information efficiency, to analyze the network and show that the information efficiency of the low-cost mobile packet radio network can be improved approximately 20 fold by using the optimum parameters. We suggest a practical trellis-coded modulation scheme which comes close to realizing the theoretic limits found.
Keywords :
Rayleigh channels; access protocols; mobile radio; optimisation; packet radio networks; spread spectrum communication; trellis coded modulation; Rayleigh fading; code rate; direct-sequence radio network; information efficiency optimization; mobile radio network; multihop radio network; packet radio network; slotted ALOHA; transmission range; trellis-coded modulation; Access protocols; Helium; Information analysis; Intelligent networks; Packet radio networks; Performance analysis; Rayleigh channels; Receivers; Spread spectrum communication; Traffic control;
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/TCOMM.2002.807607
Filename :
1181539
Link To Document :
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