Title :
A GLRT-Based Two-Stage Coexistence Detection Scheme for OFDM-Based 60-GHz WLAN/WPAN
Author :
Zhu, Dalin ; Lei, Ming
Author_Institution :
Dept. of Wireless Commun., NEC Labs. China (NLC), Beijing, China
Abstract :
In this paper, a novel two-stage coexistence detection scheme for 60-GHz millimeter-wave (mmW) WLAN/WPAN is proposed. Specifically, orthogonal frequency division multiplexing (OFDM) is employed as the transmission mode. The energy detector (ED) is used at the first stage to perform coarse scan. If required, the arithmetic mean to geometric mean detector (AGD) is invoked at the second stage to refine the overall detection performance. The second-stage AGD does not rely on any prior information of the channel gains, transmitted signal pattern or noise variance. Instead, it investigates the inherent correlation of the received data samples and is derived strictly following the generalized likelihood ratio test (GLRT) paradigm.
Keywords :
OFDM modulation; personal area networks; signal sampling; wireless LAN; wireless channels; GLRT-based two stage coexistence detection; OFDM-based WLAN-WPAN; arithmetic mean; channel gain; energy detector; frequency 60 GHz; generalized likelihood ratio test paradigm; geometric mean detector; millimeter-wave WLAN-WPAN; noise variance; orthogonal frequency division multiplexing; received data sample; second-stage AGD; transmitted signal pattern; two stage coexistence detection scheme; Covariance matrix; Detectors; Noise; OFDM; Wireless LAN; Wireless personal area networks;
Conference_Titel :
Vehicular Technology Conference (VTC Fall), 2011 IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4244-8328-0
DOI :
10.1109/VETECF.2011.6093175
