577 search results - page 20 / 116 » Performance Enhancement of Wireless Communication Systems us... |
ICC
2007
IEEE
14 years 1 months ago
2007
IEEE
Abstract— In this paper, we propose a frequency domain adaptive estimation of Doppler shifts for multiple Doppler subpaths in direct sequence code division multiple access (DS-CD...
CORR
2010
Springer
13 years 4 months ago
2010
Springer
For a single transmit and receive antenna system, a new constellation design is proposed to combat errors in the phase estimate of the channel coefficient. The proposed constellati...
CORR
2007
Springer
13 years 7 months ago
2007
Springer
We apply the replica method to analyze vector precoding, a method to reduce transmit power in antenna array communications. The analysis applies to a very general class of channel...
INFOCOM
2007
IEEE
14 years 1 months ago
2007
IEEE
—Due to the open nature of a sensor network, it is relatively easy for an adversary to eavesdrop and trace packet movement in the network in order to capture the receiver physica...
CAMAD
2006
IEEE
13 years 11 months ago
2006
IEEE
Mobile wireless communication is susceptible to signal blockage, which is loss of signal, typically due to physical obstruction, over a longer duration relative to fading. Measurem...