Fundamentals of statistical signal processing: estimation theory
Fundamentals of statistical signal processing: estimation theory
Matrix computations (3rd ed.)
Microwave Mobile Communications
Microwave Mobile Communications
Differential Detection Based on Space-Time Block Codes
Wireless Personal Communications: An International Journal
Differential space-time modulation over frequency-selective channels
IEEE Transactions on Signal Processing
IEEE Transactions on Information Theory
Space-time block codes from orthogonal designs
IEEE Transactions on Information Theory
Unitary space-time modulation for multiple-antenna communications in Rayleigh flat fading
IEEE Transactions on Information Theory
Differential space-time modulation
IEEE Transactions on Information Theory
Space-time block codes: a maximum SNR approach
IEEE Transactions on Information Theory
Representation theory for high-rate multiple-antenna code design
IEEE Transactions on Information Theory
Cayley differential unitary space-time codes
IEEE Transactions on Information Theory
A simple transmit diversity technique for wireless communications
IEEE Journal on Selected Areas in Communications
A differential detection scheme for transmit diversity
IEEE Journal on Selected Areas in Communications
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We present a generalized multichannel amplitude-and-phase coded modulation scheme for differential space-time communications. Our scheme utilizes code matrices consisting of an amplitude and a phase component, which can be thought of as a space-time multichannel generalization of the scalar amplitude and phase shift keying (APSK) constellation. The amplitude component takes a scalar coefficient that controls the total transmission power, while the phase component is a unitary matrix formed from PSK symbols. Both the amplitude and phase components are differentially encoded and admit efficient differential decoding. We show that the maximum likelihood (ML) decoding of the amplitude coefficient and phase matrix is decoupled. Moreover, the phase matrix, when constructed from orthogonal designs, is amenable to decoupled differential decoding of the phase entries, which further simplifies the decoding complexity significantly. Simulation results show that the proposed amplitude-phase differential space-time coded modulation scheme achieves a performance close to its phase-only counterpart, while providing higher spectral efficiency offered by amplitude modulation.