Title :
Capacity/modulation tradeoffs in going from 64 QAM to 256 QAM
Author_Institution :
Rockwell Int., Richardson, TX
Abstract :
Summary form only given. Increasing the modulation complexity permits significant improvements in bandwidth efficiency. However, the higher level modulation schemes must include additional countermeasures to minimize increased susceptibility to dispersion, loss of threshold, further transmitter power backoff, and increased interference susceptibility
Keywords :
amplitude modulation; channel capacity; digital radio systems; bandwidth efficiency; countermeasures; dispersion susceptibility; higher level modulation schemes; interference susceptibility; transmitter power backoff; Availability; Bit rate; Cellular networks; Costs; FCC; Intelligent networks; Land mobile radio cellular systems; Quadrature amplitude modulation; Speech; Statistics;
Conference_Titel :
Communications, 1990. ICC '90, Including Supercomm Technical Sessions. SUPERCOMM/ICC '90. Conference Record., IEEE International Conference on
Conference_Location :
Atlanta, GA
DOI :
10.1109/ICC.1990.117054
