TY - JOUR
T1 - Adaptive modulation over Nakagami fading channels
AU - Alouini, Mohamed Slim
AU - Goldsmith, Andrea J.
N1 - Funding Information:
∗ This work was supported in part by a National Semiconductor (NSC) Graduate Fellowship Award and in part by the Office of Naval Research (ONR) under Grant No. NAV-5X-N149510861. This is an expanded version of work which was presented at the 1997 IEEE Vehicular Technology Conference (VTC’97), Phoenix, Arizona, U.S.A., May 1997 and the 6th Communication Theory Mini-Conference (CTMC-VI) in conjunction with IEEE Global Communications Conference (GLOBECOM’97), Phoenix, Arizona, U.S.A., November 1997.
PY - 2000
Y1 - 2000
N2 - We first study the capacity of Nakagami multipath fading (NMF) channels with an average power constraint for three power and rate adaptation policies. We obtain closed-form solutions for NMF channel capacity for each power and rate adaptation strategy. Results show that rate adaptation is the key to increasing link spectral efficiency. We then analyze the performance of practical constant-power variable-rate M-QAM schemes over NMF channels. We obtain closed-form expressions for the outage probability, spectral efficiency and average bit-error-rate (BER) assuming perfect channel estimation and negligible time delay between channel estimation and signal set adaptation. We also analyze the impact of time delay on the BER of adaptive M-QAM.
AB - We first study the capacity of Nakagami multipath fading (NMF) channels with an average power constraint for three power and rate adaptation policies. We obtain closed-form solutions for NMF channel capacity for each power and rate adaptation strategy. Results show that rate adaptation is the key to increasing link spectral efficiency. We then analyze the performance of practical constant-power variable-rate M-QAM schemes over NMF channels. We obtain closed-form expressions for the outage probability, spectral efficiency and average bit-error-rate (BER) assuming perfect channel estimation and negligible time delay between channel estimation and signal set adaptation. We also analyze the impact of time delay on the BER of adaptive M-QAM.
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U2 - 10.1023/a:1008979107539
DO - 10.1023/a:1008979107539
M3 - Article
AN - SCOPUS:0033890687
SN - 0929-6212
VL - 13
SP - 119
EP - 143
JO - Wireless Personal Communications
JF - Wireless Personal Communications
IS - 1
ER -