Spectral efficiencies analysis of cross-layer system for Rician fading channels
Dian‐Wu Yue · Journal of Dalian Maritime University · 2007
A cross-layer system for Rician fading channels was developed to improve wireless communication network's spectral efficiencies.The system was scheduled combining multi-level adaptive modulation at physical layer with truncated automatic repeat request protocol at data link layer.The transmitter updated the modulation mode adaptively and retransmited data automatically by utilizing channel state information(CSI) and automatic repeat request(ARQ) which were fed back by the receiver.Close-form expressions of the cross-layer system and only-AM system for spectral efficiencies and the probability of outage over Rician fading channels were derived.Results show that comparing to only-AM system,the cross-layer system performance gains could achieve almost 1.5 dB,while comparing to only-ARQ system,the cross-layer system performance gains is up to 3 dB.