The effect of feedback quantization on the throughput of a multiuser diversity scheme

The effect of feedback quantization on the throughput of a multiuser diversity scheme

The impact of the quantization of SNR measurements on the throughput of a multiuser diversity scheme for constant-rate transmission is investigated under a block-Rayleigh fading assumption. In the downlink, each user measures its SNR, quantizes it, and feeds it back to the transmitter, which transmi...

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Bibliographische Detailangaben
Hauptverfasser: Floren, F., Edfors, O., Molin, B.-A.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Base stations
Cumulative distribution function (CDF)
Downlink
Electrical Engineering, Electronic Engineering, Information Engineering
Elektroteknik och elektronik
Engineering and Technology
Fading
Feedback
Feeds
Frequency
Multiuser diversity
Power control
Quantization
Radio transmitters
Teknik
Throughput
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Beschreibung
Zusammenfassung:The impact of the quantization of SNR measurements on the throughput of a multiuser diversity scheme for constant-rate transmission is investigated under a block-Rayleigh fading assumption. In the downlink, each user measures its SNR, quantizes it, and feeds it back to the transmitter, which transmits a packet to the user with the highest quantized SNR. In the case of several users having the same quantized SNR, one of them is selected at random. It is concluded that using only a few quantization levels can yield a throughput that is only slightly less than the throughput obtained by using unquantized feedback.
DOI:10.1109/GLOCOM.2003.1258287