2393 search results - page 245 / 479 » Adaptive Narrative Abstraction |
196
click to vote
ICC
2007
IEEE
16 years 28 days ago
2007
IEEE
Abstract— Since carrier frequency offset destroys user’s signal orthogonality in Orthogonal Frequency-Division Multiplexing Access (OFDMA) uplink transmission, resulting in an ...
148
click to vote
ICC
2007
IEEE
16 years 28 days ago
2007
IEEE
Abstract— An important issue in mobile commerce (mcommerce) is to exchange digital data between two distributed parties in an efficient and fair manner. In this paper, a lightwe...
153
click to vote
ICC
2007
IEEE
16 years 28 days ago
2007
IEEE
Abstract— In this paper, the performance of a downlink synchronous MC-CDMA system with joint frequency-time domain spreading over time-variant frequency-selective Rayleigh fading...
158
click to vote
ICC
2007
IEEE
16 years 28 days 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...
200
click to vote
ICC
2007
IEEE
16 years 28 days ago
2007
IEEE
Abstract— We describe a decentralized learning-based activation algorithm for a ZigBee-enabled unattended ground sensor network. Sensor nodes learn to monitor their environment i...