Title :
Spectrally efficient digital broadcast systems operated in a phase noise environment
Author :
Ohnishi, Hiroshi ; Makimoto, Mitsuo ; Feher, Kamilo
Author_Institution :
Matsushita Electr. Ind. Co., Kawasaki, Japan
fDate :
3/1/1989 12:00:00 AM
Abstract :
High spectral efficiency combined with power efficiency, is a requirement for high speed digital broadcast satellite systems. The effect of the recovered carrier phase noise and the nonlinearity on the performance of 16-QAM (quadrature amplitude modulation) and staggered 16-QAM is investigated and compared. It is found that for the phase noise, 16-QAM is more degraded for a roll-off factor of less than 0.4. For roll-off factor of more than 0.8, staggered 16-QAM has superior performance. For the nonlinearity staggered 16-QAM is more sensitive for a roll-off factor of less than 0.4. It is concluded that coincident 16-QAM is suitable for spectrally efficient digital broadcast systems.<>
Keywords :
amplitude modulation; broadcasting; carrier communication; noise; satellite relay systems; 16-QAM; digital broadcast satellite systems; nonlinearity; power efficiency; quadrature amplitude modulation; recovered carrier phase noise; roll-off factor; spectral efficiency; staggered 16-QAM; Bandwidth; Degradation; Demodulation; Digital audio broadcasting; Digital video broadcasting; Filters; Laboratories; Phase noise; Satellite broadcasting; TV broadcasting;
Journal_Title :
Broadcasting, IEEE Transactions on
