2393 search results - page 245 / 479 » Adaptive Narrative Abstraction |
217
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ICC
2007
IEEE
16 years 1 months 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 ...
173
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ICC
2007
IEEE
16 years 1 months 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...
177
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ICC
2007
IEEE
16 years 1 months 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...
180
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ICC
2007
IEEE
16 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...
227
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ICC
2007
IEEE
16 years 1 months 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...