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1. (WO2018104715) DEMODULATORS

Pub. No.:    WO/2018/104715    International Application No.:    PCT/GB2017/053649
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Tue Dec 05 00:59:59 CET 2017
IPC: H04B 1/16
H04L 27/06
Applicants: NORDIC SEMICONDUCTOR ASA
SAMUELS, Adrian James
Inventors: OLSEN, Eivind Sjøgren
WICHLUND, Sverre
UNDHEIM, Ruben
Title: DEMODULATORS
Abstract:
A radio receiver device (8) is arranged to receive a radio signal (10) including a data packet (4) having an address portion (12) and a payload portion (14), said radio receiver comprising: a first demodulation circuit portion (30) arranged to demodulate the data packet (4) and produce a first estimate of the address portion (40) and a first estimate of the payload portion (42); a second demodulation circuit portion (32) arranged to demodulate the data packet (4) and produce a second estimate of the payload portion (46); a first comparison circuit portion (34) arranged to compare said first and second estimates of the payload portion (42, 46) and produce a flag only if they are identical; and a second comparison circuit portion 36 arranged, upon receipt of said flag, to compare said first estimate of the address portion (44) to an expected address portion and to discard the data packet (4) if they are not identical.