Title :
OFDM/FM frame synchronization for mobile radio data communication
Author :
Warner, William D. ; Leung, Cyril
Author_Institution :
MPR Teltech Ltd., Burnaby, BC, Canada
fDate :
8/1/1993 12:00:00 AM
Abstract :
A synchronization scheme enabling the use of orthogonal frequency division multiplexing (OFDM)/FM over a mobile radio channel in a pure ALOHA environment is proposed. The scheme encodes synchronization information in parallel with data in the same manner in which data is encoded in the OFDM/FM frame. The synchronization information is in the form of tones, centered in certain reserved frequency subchannels of the OFDM signal. The receiver uses a correlation detector, implemented in the frequency domain, to acquire synchronization accurately on a packet-by-packet basis. Experimental results indicate that the bit-error-rate performance achievable with the proposed scheme is within 1.5 dB of the performance obtained with ideal synchronization
Keywords :
data communication systems; digital radio systems; fading; frequency division multiplexing; mobile radio systems; synchronisation; BER; OFDM/FM frame; UHF; VHF; bit-error-rate performance; correlation detector; fading; frame synchronization; frequency domain; mobile radio data communication; orthogonal frequency division multiplexing; packet-by-packet basis; pure ALOHA environment; reserved frequency subchannels; synchronization scheme; Data communication; Detectors; Digital communication; Frequency division multiplexing; Frequency domain analysis; Frequency modulation; Frequency synchronization; Land mobile radio; OFDM modulation; Receivers;
Journal_Title :
Vehicular Technology, IEEE Transactions on
