ICASSP
2009
IEEE
13 years 8 months ago
2009
IEEE
In this paper, we present two new noise variance estimation methods of OFDMA signals transmitted through an unknown multipath fading channel. We focus on blind estimation as it do...
WIMOB
2007
IEEE
13 years 10 months ago
2007
IEEE
In this paper, ranging process in IEEE 802.16e OFDMA systems is analyzed and performance is evaluated. Ranging process provides initial network entry, uplink synchronization, and ...
VTC
2007
IEEE
13 years 10 months ago
2007
IEEE
— We consider the secrecy inherent in the reciprocal nature of multipath fading channels and present a technique to generate a shared perfectly secret key by two terminals observ...