512 search results - page 2 / 103 » Random Access Systems with a Time Varying Channel |
INFOCOM
2003
IEEE
13 years 11 months ago
2003
IEEE
—We consider dynamic routing and power allocation for a wireless network with time-varying channels. The network consists of power constrained nodes that transmit over wireless l...
VTC
2007
IEEE
14 years 3 hour ago
2007
IEEE
1 — The authors of this paper proposed an iterative expectation-maximization (EM) channel estimation based on a low-density parity-check (LDPC) code-division multiple access rece...
GLOBECOM
2007
IEEE
14 years 2 days ago
2007
IEEE
— In this paper, we develop low-complexity iterative channel estimation techniques for emerging IDMA systems. The channel estimators make use of pilots as well as soft decoded da...
TSP
2008
13 years 5 months ago
2008
A cross-layered slotted ALOHA protocol is proposed and analyzed for distributed estimation in sensor networks. Suppose that the sensors in the network record local measurements of ...
ICC
2007
IEEE
14 years 1 days ago
2007
IEEE
— A multiple-input multiple-output (MIMO) system, where multiple antennas are used at both transmitter and receiver, has been a promising technique for realizing highspeed wirele...