Open AccessAdaptive modulation and combining for bandwidth and power efficient communication over fading channels
Author(s) -
Belhaj Nesrine,
Hamdi Noureddine,
Alouini MohamedSlim,
Bouallegue Ammar
Publication year - 2007
Publication title -
wireless communications and mobile computing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.42
H-Index - 64
eISSN - 1530-8677
pISSN - 1530-8669
DOI - 10.1002/wcm.370
Subject(s) - fading , computer science , spectral efficiency , bit error rate , link adaptation , bandwidth (computing) , channel (broadcasting) , diversity combining , modulation (music) , electronic engineering , power (physics) , telecommunications , algorithm , philosophy , physics , quantum mechanics , engineering , aesthetics
Traditional fading mitigation techniques are designed relative to the worst‐case channel conditions, resulting in a poor utilization of the spectrum and the available power a good percentage of the time. In contrast, we introduce and investigate in this paper new adaptive modulation and diversity combining techniques that jointly select the most appropriate constellation size and the most suitable diversity branches in response to the channel variation and given a desired bit error rate (BER) requirement. Numerical results show that these newly proposed adaptive modulation and combining schemes can reduce considerably the average receiver channel estimation complexity as well as the power drain from the battery while offering high spectral efficiency and satisfying the desired outage probability and BER requirements. Copyright © 2006 John Wiley & Sons, Ltd.