100 search results - page 1 / 20 » Effect of feedback prediction on OFDMA system throughput |
IWCMC
2009
ACM
14 years 1 months ago
2009
ACM
In wireless communication systems, adaptive modulation and coding (AMC) is used to improve the downlink (DL) spectral efficiency by exploiting the underlying channel condition. Ho...
VTC
2007
IEEE
14 years 1 months ago
2007
IEEE
— In this paper we analyze the downlink OFDMA system-level performances of a 2x2 dual-stream MIMO multiuser transmission scheme under the assumptions of partial and noisy channel...
ICC
2009
IEEE
13 years 5 months ago
2009
IEEE
In this paper, we study the possibility of throughput improvement through precoding in OFDMA based wireless systems with limited channel feedback. Precoding can increase the overal...
VTC
2008
IEEE
14 years 1 months ago
2008
IEEE
— In OFDMA systems, channel quality information (CQI) feedback is used to determine the modulation and coding level of a mobile station (MS). When the MS uses diversity, it trans...
WIMOB
2007
IEEE
14 years 1 months ago
2007
IEEE
As part of the IEEE 802.16 protocol, the random access scheme is used for ranging. The ratio between the numbers of periodic ranging slots and data slots in the uplink subframe de...