This paper focuses on phase noise-impaired communications. An efficient Maximum A-posteriori Probability (MAP) iterative synchronization algorithm, where detection and decoding are performed separately from phase estimation, is proposed. This approach has the following key advantages: (i) its computational complexity is relatively low and its performance is near optimal; (ii) it requires very limited statistical knowledge of the phase noise process; and (iii) it enables the direct use of “off-the-shelf” demodulation and decoding blocks. These features are particularly attractive from the implementation viewpoint, as they lead to the design of effective pragmatic high-order coded modulated schemes. The proposed iterative synchronization and decoding algorithm, evaluated for Low-Density Parity-Check (LDPC)-coded pilot symbol-assisted Quadrature Amplitude Modulation (QAM) schemes, entails a negligible energy efficiency loss with respect to optimized joint decoding and phase estimation approaches, with significantly lower computational complexity.

Reduced-complexity synchronization for high-order coded modulations / Martalo, M.; Ferrari, G.; Asim, M.; Gambini, J.; Mazzucco, C.; Cannalire, G.; Bianchi, S.; Raheli, R.. - (2015), pp. 4721-4726. ((Intervento presentato al convegno IEEE Int. Conf. on Communications (ICC 2015), Signal Processing for Communications Symposium ('ICC'15 (05) SPC') tenutosi a London, UK nel giugno [10.1109/ICC.2015.7249069].

Reduced-complexity synchronization for high-order coded modulations

FERRARI, Gianluigi;RAHELI, Riccardo
2015

Abstract

This paper focuses on phase noise-impaired communications. An efficient Maximum A-posteriori Probability (MAP) iterative synchronization algorithm, where detection and decoding are performed separately from phase estimation, is proposed. This approach has the following key advantages: (i) its computational complexity is relatively low and its performance is near optimal; (ii) it requires very limited statistical knowledge of the phase noise process; and (iii) it enables the direct use of “off-the-shelf” demodulation and decoding blocks. These features are particularly attractive from the implementation viewpoint, as they lead to the design of effective pragmatic high-order coded modulated schemes. The proposed iterative synchronization and decoding algorithm, evaluated for Low-Density Parity-Check (LDPC)-coded pilot symbol-assisted Quadrature Amplitude Modulation (QAM) schemes, entails a negligible energy efficiency loss with respect to optimized joint decoding and phase estimation approaches, with significantly lower computational complexity.
978-1-4673-6432-4
978-1-4673-6432-4
Reduced-complexity synchronization for high-order coded modulations / Martalo, M.; Ferrari, G.; Asim, M.; Gambini, J.; Mazzucco, C.; Cannalire, G.; Bianchi, S.; Raheli, R.. - (2015), pp. 4721-4726. ((Intervento presentato al convegno IEEE Int. Conf. on Communications (ICC 2015), Signal Processing for Communications Symposium ('ICC'15 (05) SPC') tenutosi a London, UK nel giugno [10.1109/ICC.2015.7249069].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11381/2799802
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