Conference proceeding
Transmission capacity of CDMA ad-hoc networks
Eighth IEEE International Symposium on Spread Spectrum Techniques and Applications - Programme and Book of Abstracts (IEEE Cat. No.04TH8738), pp 245-249
2004
Abstract
Spread spectrum technologies are appropriate for ad-hoc networking because they permit interference averaging and tolerate colocated simultaneous transmissions. We develop analytical results on the transmission capacity of a CDMA ad-hoc network. Transmission capacity is defined as the maximum permissible density of simultaneous transmissions that allows a certain probability of successful reception. We obtain closed-form upper and lower bounds on the transmission capacity for both frequency hopped (FH-CDMA) and direct sequence (DS-CDMA) implementations of CDMA. Our analysis shows that FH-CDMA obtains a higher transmission capacity than DS-CDMA on the order of M/sup 1-2//spl alpha//, where M is the spreading factor and /spl alpha/>2 is the path loss exponent. The interpretation is that FH-CDMA is generally preferable to DS-CDMA for ad-hoc networks.
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Details
- Title
- Transmission capacity of CDMA ad-hoc networks
- Creators
- S Weber - Texas Univ., Austin, TX, USAXiangying Yang - Texas Univ., Austin, TX, USAG de Veciana - Texas Univ., Austin, TX, USAJ.G Andrews - Texas Univ., Austin, TX, USA
- Publication Details
- Eighth IEEE International Symposium on Spread Spectrum Techniques and Applications - Programme and Book of Abstracts (IEEE Cat. No.04TH8738), pp 245-249
- Conference
- Eighth IEEE International Symposium on Spread Spectrum Techniques and Applications, 8th
- Publisher
- IEEE
- Number of pages
- 1
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Electrical and Computer Engineering
- Other Identifier
- 991019182780704721