An adaptive ARQ scheme with packet combining for time varying channels

Chakraborty, Shyam; Liinabarja, M.; Yli-Juuti, E.

doi:10.1109/4234.749360

Cited by 38 publications

(7 citation statements)

References 14 publications

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“…The work in [4] did not address the case with error-correcting code in a typical time-varying mobile channel environment. If the method of [4] is directly applied to the case with error-correcting code in time-varying mobile channel, the channel BER may not be estimated properly due to error correction of the FEC code. Specifically, their method gives channel BER estimation for one direction only (i.e., from a good channel state to a bad channel state direction).…”

Section: A Channel Error Rate Estimationmentioning

confidence: 99%

“…In [4], XOR-ing (originally used by [5]) of the two consecutive errorneous copies is used to estimate the channel BER for an adaptive ARQ scheme with no error correction in a stationary channel. The work in [4] did not address the case with error-correcting code in a typical time-varying mobile channel environment.…”

Section: A Channel Error Rate Estimationmentioning

confidence: 99%

“…As originally stated, XOR-ing was first used by Sindhu in [5] to locate the errors. But how to deal with the case when there is no consecutive unsuccessful packets was not considered by [4]. Although [4] states that their channel BER estimation can be applied to any adaptive scheme, we notice that for ARQ schemes with adaptive error correction codes the channel BER may not be estimated properly due to error correction of the forward error correction (FEC) code.…”

Section: Introductionmentioning

confidence: 99%

“…But how to deal with the case when there is no consecutive unsuccessful packets was not considered by [4]. Although [4] states that their channel BER estimation can be applied to any adaptive scheme, we notice that for ARQ schemes with adaptive error correction codes the channel BER may not be estimated properly due to error correction of the forward error correction (FEC) code. Specifically, their method gives channel BER estimation for one direction only (i.e., from the good channel state to the bad channel state direction).…”

Section: Introductionmentioning

confidence: 99%

“…In [4], XOR-ing of the two consecutive erroneous copies is used to estimate the channel bit error rate (BER) for an adaptive ARQ scheme with no error correction in a stationary channel. As originally stated, XOR-ing was first used by Sindhu in [5] to locate the errors.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

On ARQ scheme with adaptive error control

Minn

Zeng

Bhargava

2001

IEEE Trans. Veh. Technol.

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Abstract-Adaptive automatic repeat request (ARQ) schemes are quite effective for throughput enhancement in time-varying mobile channel environments. In this paper, 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 adaptive ARQ scheme is also investigated and the simulation results show that this scheme is quite efficient in counteracting long deep fades.Index Terms-Adaptive error control, adaptive automatic repeat request (ARQ), adaptive FH, channel sensing, frequency hopping (FH), time-varying mobile radio channel.

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Section: A Channel Error Rate Estimationmentioning

confidence: 99%