Title :
Invertible bounds for M-QAM in Rayleigh fading
Author :
Conti, Andrea ; Win, Moe Z. ; Chiani, Marco
Author_Institution :
Dipt. di Elettronica, Univ. of Bologna, Italy
Abstract :
In this letter, we derive tight invertible bounds on the bit-error probability (BEP) for the coherent detection of M-ary quadrature amplitude modulation with Gray code bit mapping in Rayleigh fading channels. These bounds enable us to easily obtain tight lower and upper bounds on the bit-error outage (BEO), i.e., BEP-based outage probability, in a log-normal shadowing environment. As examples of applications, these bounds are used to investigate the BEO and mean spectral efficiency for slow adaptive modulation.
Keywords :
Gray codes; Rayleigh channels; adaptive modulation; error statistics; quadrature amplitude modulation; Gray code bit mapping; M-QAM; M-ary quadrature amplitude modulation; Rayleigh fading channels; adaptive modulation; bit-error outage; bit-error probability; coherent detection; mean spectral efficiency; AWGN channels; Amplitude modulation; Digital video broadcasting; Error correction; Fading; Laboratories; Quadrature amplitude modulation; Quality of service; Rayleigh channels; Shadow mapping; Adaptive modulation; bit-error outage (BEO); bit-error probability (BEP) evaluation; fading channel; shadowing;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2005.853914
