Title :
Preamble reconstruction method for impulsive interference avoidance in MIMO-OFDM receivers
Author :
He, Tsung-Yeh ; Lin, You-Hsien ; Tsai, Tsung-yu ; Hsu, Terng-Yin
Author_Institution :
Inst. of Comput. Sci. & Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
For wireless packet transmissions, preambles are essential to make packet synchronization function. Impulsive interference not only distorts datum, but also degrades link reliability. To deal with such distortions, a peak-to-average ratio (PAPR) detection is adopted to search impulsive positions and the convolution with the estimated time-domain response is used to recovery the distorted preambles. Simulations of a 2×2 MIMO-OFDM system with RF impairments in frequency-selective fading indicate that the SNR loss is about 2.5 dB ~ 4.6 dB to ensure synchronization working at a signal-to-impulse ratio (SIR) of -10 dB.
Keywords :
MIMO communication; OFDM modulation; convolution; interference suppression; radio receivers; radiofrequency interference; synchronisation; telecommunication network reliability; time-domain analysis; MIMO-OFDM receiver system; PAPR detection; RF impairments; SNR loss; convolution; estimated time-domain response; frequency-selective fading; impulsive interference avoidance; impulsive positions; link reliability; packet synchronization function; peak-to-average ratio detection; preamble reconstruction method; signal-to-impulse ratio; wireless packet transmissions; Fading; Gain control; Interference; Peak to average power ratio; Synchronization; Wireless communication; Impulsive Interference Avoidance; MIMO-OFDM; Preamble Reconstruction; RF impairment;
Conference_Titel :
Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC), 2012
Conference_Location :
New Taipei City
Print_ISBN :
978-1-4673-1867-9
DOI :
10.1109/CSQRWC.2012.6294968
