Adaptive hybrid M-FSK M-QAM modulation

F.F. Digham; M.-S. Alouini

doi:10.1109/PACRIM.2003.1235944

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Conference proceeding

Adaptive hybrid M-FSK M-QAM modulation

F.F. Digham and M.-S. Alouini

2003 IEEE Pacific Rim Conference on Communications Computers and Signal Processing (PACRIM 2003) (Cat. No.03CH37490), Vol.2, pp.964-967 vol.2

2003

DOI: https://doi.org/10.1109/PACRIM.2003.1235944

Abstract

Bit error rate

Delay estimation

Feedback

Frequency shift keying

Power system modeling

Power system reliability

Power transmission

Quadrature amplitude modulation

Transmitters

Transportation

We propose a variable-rate variable-power scheme which employs both noncoherent M-ary frequency shift keying (M-FSK) and M-ary quadrature amplitude modulation (M-QAM). The idea is that adaptive M-FSK is used when the M-QAM system declares an outage. The goal is to provide a better channel utilization and a reliable link of communication even at very bad channel conditions. We consider this hybrid system design by maximizing its spectral efficiency for given constraints on average power transmission and bit error rate. As a result, we obtain power and bit loading functions for both the M-FSK and M-QAM schemes which are mutual and channel-gain dependents.

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Details

Title: Adaptive hybrid M-FSK M-QAM modulation
Creators - without role: F.F. Digham - Dept. of Electr. & Comput. Eng., Minnesota Univ., USA
M.-S. Alouini - Dept. of Electr. & Comput. Eng., Minnesota Univ., USA
Publication Details: 2003 IEEE Pacific Rim Conference on Communications Computers and Signal Processing (PACRIM 2003) (Cat. No.03CH37490), Vol.2, pp.964-967 vol.2
Publisher: IEEE
Identifiers: 9941859508331
Academic Unit: King Abdullah University of Science & Technology
Language: English
Resource Type: Conference proceeding