A communication unit for soft-decision demodulation and method therefor
A communication unit for soft-decision demodulation and method therefor
A communication unit for performing soft-decision demodulation comprises a arranged to receive a transmitted signal having a first set of bits comprising k bits that has been selected from a set of 2k possible signals according to values of the k bits, and includes a second set of bits comprising Qm bits based on a phase rotation of the transmitted signal selected from a set of 2Qm possible rotations. A demodulator (118) comprising a bank of 2k correlators is configured to detect a transmission of each possible transmitted signal, and output 2k phases of the correlator outputs as a third set of inputs. A de-mapper circuit (113) is coupled to the demodulator (118) and configured to receive the third set of inputs, determine statistics derived from a number of aggregated correlator output phase distributions of the third set of inputs and calculate therefrom and output a second set of a posteriori soft bits comprising Qm soft bits.
GB2598020A
3 August 2022
Maunder, Rob
76099323-7d58-4732-a98f-22a662ccba6c
Tavakkoli, Aryan
22f007e0-8a17-4932-805f-88b92deacc93
Maunder, Rob and Tavakkoli, Aryan
(Inventors)
(2022)
A communication unit for soft-decision demodulation and method therefor.
GB2598020A.
Abstract
A communication unit for performing soft-decision demodulation comprises a arranged to receive a transmitted signal having a first set of bits comprising k bits that has been selected from a set of 2k possible signals according to values of the k bits, and includes a second set of bits comprising Qm bits based on a phase rotation of the transmitted signal selected from a set of 2Qm possible rotations. A demodulator (118) comprising a bank of 2k correlators is configured to detect a transmission of each possible transmitted signal, and output 2k phases of the correlator outputs as a third set of inputs. A de-mapper circuit (113) is coupled to the demodulator (118) and configured to receive the third set of inputs, determine statistics derived from a number of aggregated correlator output phase distributions of the third set of inputs and calculate therefrom and output a second set of a posteriori soft bits comprising Qm soft bits.
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Published date: 3 August 2022
Identifiers
Local EPrints ID: 473709
URI: http://eprints.soton.ac.uk/id/eprint/473709
PURE UUID: d1641802-9cad-4e63-8228-3ba797541782
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Date deposited: 27 Jan 2023 18:09
Last modified: 17 Mar 2024 03:14
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Contributors
Inventor:
Rob Maunder
Inventor:
Aryan Tavakkoli
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