Title :
Blind-detection assisted sub-band adaptive turbo-coded OFDM schemes
Author :
Keller, T. ; Hanzo, L.
Author_Institution :
Dept. of Electron. & Comput. Sci., Southampton Univ., UK
Abstract :
Burst-by-burst adaptive OFDM modems efficiently combat the effects of strong time-variant multipath interference. Their performance is investigated using blind modem mode detection and turbo coding. Virtually error-free modem mode detection is achieved over Gaussian channels for signal-to-noise ratios (SNR) in excess of about 10 dB upon using one of four modem modes, namely 0, 1, 2 and 4 bits/symbol in each of the sub-bands employed. The system can be configured for maintaining arbitrary target BERs, including virtually error-free communications, when adjusting the target number of bits per OFDM symbol transmitted
Keywords :
Gaussian channels; OFDM modulation; adaptive codes; adaptive modulation; adaptive signal detection; dispersive channels; error statistics; modems; multipath channels; radiofrequency interference; turbo codes; BER; Gaussian channels; SNR; adaptive OFDM modems; blind modem mode detection; blind-detection; error-free communications; error-free modem mode detection; performance; signal-to-noise ratios; sub-band adaptive turbo-coded OFDM; time-variant multipath interference; turbo coding; Computer science; Gaussian channels; Interference; Modems; OFDM modulation; Rayleigh channels; Signal to noise ratio; Transmitters; Turbo codes; USA Councils;
Conference_Titel :
Vehicular Technology Conference, 1999 IEEE 49th
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-5565-2
DOI :
10.1109/VETEC.1999.778103
