Proceedings ArticleDOI
Variable spreading gain CDMA with adaptive control for integrated traffic in wireless networks
Chih-Lin I,Krishan Kumar Sabnani +1 more
- Vol. 2, pp 794-798
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TLDR
The authors extend the analytic study to the case for integrated service types and give numerical results for the integration of voice and data.Abstract:
The growth in personal communications and mobile computing has motivated investigation into packetized wireless networks for integrated services such as voice/data/image/video. Variable spreading gain CDMA (VSG-CDMA) is a candidate system that accommodates mixed traffic types and dynamic capacity access. The adaptive multiple access algorithm provides for a graceful integration of various services and can give priority to ongoing services over new access attempts. This algorithm can be implemented distributedly at the mobile stations by a simple downlink broadcast of the uplink load status. Previous work described VSG-CDMA and the dynamic access algorithm. It was shown how the priority feature works for a single service class. In the present paper, the authors extend the analytic study to the case for integrated service types and give numerical results for the integration of voice and data.read more
Citations
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References
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Journal ArticleDOI
On the capacity of a cellular CDMA system
Klein S. Gilhousen,Irwin M. Jacobs,Roberto Padovani,Andrew J. Viterbi,L.A. Weaver,Charles E. Iii Del Mar Wheatley +5 more
TL;DR: In this paper, the interference-suppression feature of CDMA (code division multiple access) can result in a many-fold increase in capacity over analog and even over competing digital techniques.
Proceedings Article
On the capacity of a cellular CDMA system
Klein S. Gilhousen,Irwin M. Jacobs,Roberto Padovani,Andrew J. Viterbi,L.A. Weaver,Charles E. Iii Del Mar Wheatley +5 more
TL;DR: It is concluded that properly augmented and power-controlled multiple-cell CDMA (code division multiple access) promises a quantum increase in current cellular capacity.
Journal ArticleDOI
Performance Evaluation for Phase-Coded Spread-Spectrum Multiple-Access Communication--Part I: System Analysis
TL;DR: An analysis of an asynchronous phase-coded spread-spectrum multiple-access communication system reveals which code parameters have the greatest impact on communication performance and provides analytical tools for use in preliminary system design.
Journal ArticleDOI
Bit-to-bit error dependence in slotted DS/SSMA packet systems with random signature sequences
R.K. Morrow,James S. Lehnert +1 more
TL;DR: An improved Gaussian approximation to the probability of data bit error is performed and shows that if no error control exists in the desired packet or if block error control is used when multiple-access interference is high, the error dependence increases the average probability of packet success beyond that predicted by models which use independent bit errors.
Journal ArticleDOI
Error Probabilities for Binary Direct-Sequence Spread-Spectrum Communications with Random Signature Sequences
TL;DR: An expression for the output of the receiver is obtained for the case of random signature sequences, and the corresponding characteristic function is determined to study the density function of the multiple-access interference and to determine arbitrarily tight upper and lower bounds on the average probability of error.