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Receiver-Based Adaptive Rate Control<br />

[Holland00tech,Holland01MobiCom]<br />

Multi-rate radios are capable of transmitting at<br />

several rates, using different modulation schemes<br />

WaveLan [Kamerman97] uses a sender-based<br />

mechanism for determining the suitable rate<br />

Rate is decreased if packets cannot be transmitted at a<br />

higher rate<br />

Rate is increased if successful transmissions at lower rate<br />

Receiver can potentially provide a better estimate of<br />

channel quality<br />

Receiver-based decision mechanism for choosing<br />

appropriate modulation scheme can perform better<br />

305

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