174 search results - page 4 / 35 » On the Signaling Overhead in Dynamic OFDMA Wireless Systems |
ICASSP
2011
IEEE
12 years 11 months ago
2011
IEEE
A weighted sum-rate maximization problem is considered for an access point (AP) allocating resources to wireless cognitive radios (CRs) communicating using orthogonal frequency-di...
VTC
2007
IEEE
14 years 1 months ago
2007
IEEE
—This paper presents a downlink performance analysis of a Layered Random Beamforming (LRB) - MIMO-OFDMA Physical Layer (PHY) as applicable to future generation wireless communica...
GLOBECOM
2007
IEEE
13 years 9 months ago
2007
IEEE
: The improvement of spectral efficiency comes at the cost of exponential increment of signal processing complexity [1]. Hence, the energy-efficiency of baseband has recently turne...
VTC
2008
IEEE
14 years 1 months ago
2008
IEEE
—Mobile WiMAX has become one of the 3rd Generation communication systems and its performance has been widely evaluated. The physical overhead is a critical factor that may affect...
MOBIWAC
2006
ACM
14 years 1 months ago
2006
ACM
In this work we present a calibration-free system for locating wireless local area network devices, based on the radio frequency characteristics of such networks. Calibration proc...