Optimizing information efficiency in a direct-sequence mobile packet radio network

被引：20
|
作者：
Chandra, MW [1 ]
Hughes, BL
机构：
[1] Cisco Syst, Res Triangle Pk, NC 27709 USA
[2] N Carolina State Univ, Dept Elect & Comp Engn, Ctr Adv Comp & Commun, Raleigh, NC 27695 USA
来源：
IEEE TRANSACTIONS ON COMMUNICATIONS | 2003年 / 51卷 / 01期
关键词：
direct-sequence modulation; spectral efficiency; spread-spectrum; trellis-coded modulation optimum transmission; ranges;
D O I：
10.1109/TCOMM.2002.807607
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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.
引用
收藏
页码：22 / 24
页数：3
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