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An Integrated Voice/Data CDMA Packet Communications with Multi-Code CDMA Scheme
Abbas SANDOUK Takaya YAMAZATO Masaaki KATAYAMA Akira OGAWA
Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Vol.E82-A
No.10
pp.2105-2114 Publication Date: 1999/10/25 Online ISSN:
DOI: Print ISSN: 0916-8508 Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications) Category: Communication Systems Keyword: integrated voice and data, packet CDMA, CDMA ALOHA, multi-code CDMA, throughput, outage probability, MCLSP,
Full Text: PDF>>
Summary:
In this paper, we consider an integrated voice and data system over CDMA Slotted-ALOHA (CDMA S-ALOHA). We investigate its performance when multi-code CDMA (MC-CDMA) is applied as a multi-rate scheme to support users which require transmission with different bit rates. Two different classes of data users are transmitted together with voice. Performance measurement is obtained in respect of throughput for data and outage probability for voice. Moreover, we consider the Modified Channel Load Sensing Protocol (MCLSP) as a traffic control to improve the throughput of data. As a result, we show that the MC-CDMA technique is an effective one to obtain good throughput for data users at an acceptable voice outage probability. Furthermore, we show that with MCLSP, the throughput of data can be improved to reach a constant value even at a high offered load of data users.
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