Title :
Effects of non-homogeneous SINR estimation error statistics on scheduling performance in OFDM downlink systems
Author :
Choi, Ji-Woong ; Cioffi, John M.
Author_Institution :
Marvell Semicond., Inc., Santa Clara, CA
fDate :
5/1/2008 12:00:00 AM
Abstract :
This paper investigates the effect of inaccurate SINR estimation on the performance of multi-user scheduling in downlink orthogonal frequency division multiplexing (OFDM) systems. Considering path loss, time and frequency selectivity of the channel, the error statistics of SINR estimation is analyzed. Then, the effect of SINR inaccuracy is evaluated in respect to system throughput and fairness when each user has different error statistics according to channel environments.
Keywords :
OFDM modulation; channel estimation; error statistics; multiuser channels; radio links; scheduling; OFDM downlink system; error statistics; fairness; multiuser scheduling performance; nonhomogeneous SINR estimation; orthogonal frequency division multiplexing; system throughput; time-frequency selectivity channel; Base stations; Delay estimation; Downlink; Error analysis; Estimation error; Frequency estimation; OFDM; Scheduling; Signal to noise ratio; Throughput;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2008.060379
