Title :
Spectral efficiency of M-QAM in frequency reuse radio systems
Author_Institution :
Roke Manor Res. Ltd., Romsey, UK
Abstract :
The spectral efficiency of M-QAM has been investigated for frequency reuse radio systems under the propagation conditions of the land mobile radio environment. The results indicate that, under certain circumstances (of propagation and coverage requirements), increasing the number of levels can lead to an improvement in the spectral efficiency of interference limited systems, but that, as better coverage or service quality is sought, these spectral efficiency improvements diminish.<>
Keywords :
amplitude modulation; frequency allocation; mobile radio systems; radiowave propagation; M-QAM; coverage requirements; frequency reuse radio systems; interference limited systems; land mobile radio environment; propagation conditions; quadrature amplitude modulation; service quality; spectral efficiency;
Journal_Title :
Communications, Speech and Vision, IEE Proceedings I
