On ARQ scheme with adaptive error control

TitleOn ARQ scheme with adaptive error control
Publication TypeJournal Article
Year of Publication2001
AuthorsMinn, H., M. Zeng, and V. K. Bhargava
JournalVehicular Technology, IEEE Transactions on
Pagination1426 -1436
Date Publishednov.
Keywordsadaptive automatic repeat request, adaptive codes, adaptive error control, adaptive error-correcting codes, ARQ scheme, automatic repeat request, channel estimation algorithm, computer simulation, error correction codes, frequency diversity, frequency hop communication, frequency hopping, land mobile radio, link adaptation, log-normal shadowing, mobile wireless radio channel, multipath channels, parameter estimation, Rayleigh channels, Rayleigh fading, Reed-Solomon codes, robust channel sensing algorithm, simulation results, throughput performance, time-varying channels, time-varying mobile channel, time-varying multipath fading channel

Adaptive automatic repeat request (ARQ) schemes are quite effective for throughput enhancement in time-varying mobile channel environments. An ARQ scheme with adaptive error-correcting codes is considered. A robust channel sensing algorithm by making use of XOR-ing is proposed for link adaptation. With the proposed channel estimation algorithm, an adaptive scheme that adapts its error-correcting codes according to channel conditions is presented. The efficiency of the proposed adaptive ARQ scheme is evaluated in terms of throughput performance by computer simulation for a time-varying mobile channel characterized by Rayleigh fading and log-normal shadowing. As an enhancement in counteracting long deep fades, the incorporation of frequency diversity into an adaptive ARQ scheme is also investigated and the simulation results show that this scheme is quite efficient in counteracting long deep fades


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