Title :
Performance of multiresolution OFDM on frequency-selective fading channels
Author :
Kim, Dukhyun ; Stüber, Gordon L.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
Several multiresolution modulation schemes with orthogonal frequency division multiplexing (OFDM) are examined. The effect of interchannel interference (ICI) caused by channel time variation and carrier frequency offset is considered. The performance of the multiresolution schemes for both uncoded and trellis-coded systems are evaluated in terms of their bit error rate (BER) and degree of prioritization. Finally, applications to HDTV broadcasting are considered, where a concatenated coding scheme is employed to provide the required performance levels
Keywords :
Gaussian channels; adjacent channel interference; concatenated codes; fading; frequency division multiplexing; high definition television; multipath channels; television broadcasting; trellis coded modulation; HDTV broadcasting; bit error rate; carrier frequency offset; channel time variation; concatenated coding scheme; degree of prioritization; frequency-selective fading channels; interchannel interference; multiresolution OFDM; multiresolution modulation schemes; orthogonal frequency division multiplexing; performance; trellis-coded systems; uncoded systems; Bandwidth; Bit error rate; Concatenated codes; Frequency-selective fading channels; HDTV; Interchannel interference; Intersymbol interference; OFDM modulation; Signal resolution; TV broadcasting;
Conference_Titel :
Global Telecommunications Conference, 1997. GLOBECOM '97., IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-4198-8
DOI :
10.1109/GLOCOM.1997.632504
