Principles of Mobile Communication
Principles of Mobile Communication
Adaptive Modulation over Nakagami Fading Channels
Wireless Personal Communications: An International Journal
Blind adaptive modulation systems for wireless channels with binary feedback: Research Articles
Wireless Communications & Mobile Computing
Channel capacity of adaptive transmission with maximal ratio combining in correlated Rayleigh fading
IEEE Transactions on Wireless Communications
Cross-Layer combining of adaptive Modulation and coding with truncated ARQ over wireless links
IEEE Transactions on Wireless Communications
SNR gap approximation for M-PSK-Based bit loading
IEEE Transactions on Wireless Communications
Adaptive Modulation with Diversity Combining Based on Output-Threshold MRC
IEEE Transactions on Wireless Communications
Capacity of fading channels with channel side information
IEEE Transactions on Information Theory
| Hi-index | 0.01 |
Channel estimation at the receiver side is essential to adaptive modulation schemes, prohibiting low complexity systems from using variable rate and/or variable power transmissions. Towards providing a solution to this problem, we introduce a variable-rate (VR) M-PSK modulation scheme, for communications over fading channels, in the absence of channel gain estimation at the receiver. The choice of the constellation size is based on the signal-plus-noise (S+N) sampling value rather than on the signal-to-noise ratio (S/N). It is analytically shown that S+N can serve as an attractive simpler criterion, alternative to S/N, for determining the modulation order in VR systems. In this way, low complexity transceivers can use VR transmissions in order to increase their spectral efficiency under an error performance constraint. As an application, we utilize the proposed VR modulation scheme in equal gain combining (EGC) diversity receivers.