Title :
Adaptive coded modulation over slow frequency-selective fading channels
Author :
Viswanathan, Harish ; Li, Xiaodong ; Krishnamoorthy, Rajeev
Author_Institution :
Lucent Technol., AT&T Bell Labs., Holmdel, NJ, USA
Abstract :
We consider adaptive coded modulation for systems using QPSK/8PSK/16QAM constellations with a decision-feedback equalizer for slow frequency-selective fading channels. We investigate several potential channel-quality metrics that could be used to choose the correct coding and modulation scheme. We then present a threshold-adaptive algorithm that is especially useful for channels with a wide range of multipath profiles
Keywords :
adaptive codes; adaptive modulation; channel coding; decision feedback equalisers; fading channels; modulation coding; multipath channels; quadrature amplitude modulation; quadrature phase shift keying; 16QAM; 8PSK; QPSK; adaptive coded modulation; decision-feedback equalize; multipath profiles; potential channel-quality metrics; slow frequency-selective fading channel; slow frequency-selective fading channels; threshold-adaptive algorithm; Decision feedback equalizers; Filters; Forward error correction; Frequency modulation; Frequency-selective fading channels; Interference; Maximum likelihood decoding; Modulation coding; Pulse shaping methods; Transmitters;
Conference_Titel :
Vehicular Technology Conference, 1999 IEEE 49th
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-5565-2
DOI :
10.1109/VETEC.1999.778500
