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144
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WCNC
2008
IEEE
16 years 1 months ago
2008
IEEE
— In this paper, we present a novel algorithm for reducing sidelobe interference power levels in OFDM-based cognitive radios. Existing techniques for sidelobe suppression can be ...
184
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WCNC
2008
IEEE
16 years 1 months ago
2008
IEEE
Abstract— We consider a scenario in which frequency agile radios opportunistically share a fixed spectrum resource with a set of primary nodes. We develop a collaborative scheme...
181
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WCNC
2008
IEEE
16 years 1 months ago
2008
IEEE
—We present a system-level approach to localizing and tracking users on a basis of different sources of location information. We have applied a combination of the Cricket system ...
193
Voted
WCNC
2008
IEEE
16 years 1 months ago
2008
IEEE
—In this contribution an accurate average bit error rate (BER) formula is derived for Nakagami-faded MC-DSCDMA in the context of asynchronous transmissions and random spreading s...
166
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WMTE
2008
IEEE
16 years 1 months ago
2008
IEEE
Mobile and ubiquitous learning facilitates language learners to continue their learning process outside the formal classroom, when and where they desire. While more and more learn...