A STUDY ON THE PERFORMANCE IMPROVEMENTS OF ERROR CONTROL SCHEMES IN DIGITAL CELLULAR DS-CDMA SYSTEMS

In this paper, the average error-rate characteristics are investigated as the number of users increases in the digital cellular DS/CDMA (Direct Sequence/Code Division Multiple Access) systems. Then, the performances of the various error control schemes applied to the data service of digital cellular DS/CDMA systems are compared and analyzed. That is, the performances of the conventional error control schemes such as Go-back-N ARQ (Automatic Repeat Request) and Selective-Repeat ARQ are analyzed in the circumstance of digital cellular DS/CDMA system. Also, the improved error control schemes which utilize the variable window size and/or variable data packet size are proposed and evaluated in order to improve the performances of the conventional error control scheme such as Quick-Repeat ARQ and WORM ARQ schemes in the digital cellular DS/CDMA system environments. According to the simulation results, the performances of the improved scheme with variable window and variable frame size are superior to those of the conventional scheme in the view of throughput and delay characteristics due to the robustness to the fading channel impairments.
Publisher
IEICE-INST ELECTRON INFO COMMUN ENG
Issue Date
1994-07
Language
ENG
Citation

IEICE TRANSACTIONS ON COMMUNICATIONS, v.E77B, no.7, pp.883 - 890

ISSN
0916-8516
URI
http://hdl.handle.net/10203/57258
Appears in Collection
EE-Journal Papers(저널논문)
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