Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2011-04-12
2011-04-12
Bocure, Tesfaldet (Department: 2611)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C375S344000, C375S365000, C375S137000
Reexamination Certificate
active
07924953
ABSTRACT:
Provided is an apparatus and method for detecting a time-frequency code in an MB-OFDM UWB system. The apparatus includes a controller for providing a band selection signal to the RF receiver and outputting a preamble selection signal at regular symbol periods to calculate a cross correlation value for a predetermined time period more than a beacon frame interval when a time-frequency code search start signal is received; and a cross correlator for storing information on preamble patterns, selecting a preamble stored depending on the preamble selection signal, and calculating a cross correlation value for a digital signal transferred through the RF receiver, wherein the controller determines a time-frequency code using a preamble where a peak occurs as a time-frequency code that is currently in use when a peak signal is inputted based on the calculated cross correlation value, and transmits the determined time-frequency code to the MAC receiver.
REFERENCES:
patent: 7454218 (2008-11-01), Mo et al.
patent: 7567533 (2009-07-01), Lai
patent: 7769074 (2010-08-01), Nakache et al.
patent: 2005/0159106 (2005-07-01), Palin et al.
patent: 2005/0176371 (2005-08-01), Palin et al.
patent: 2005/0177639 (2005-08-01), Reunamaki et al.
patent: 2005/0190817 (2005-09-01), Batra et al.
patent: 2005/0265219 (2005-12-01), Murphy et al.
patent: 2006/0029018 (2006-02-01), Mizukami et al.
patent: 2007/0054680 (2007-03-01), Mo et al.
patent: 2007/0064744 (2007-03-01), Aytur et al.
patent: 1020050035655 (2005-04-01), None
patent: 1020050099163 (2005-10-01), None
patent: 1020060070901 (2006-06-01), None
patent: 1020060114590 (2006-11-01), None
patent: 1020060130014 (2006-12-01), None
patent: 2006/014342 (2006-02-01), None
Lai et al., A Robust Band-Tracking Packet Detector (BT-PD) in OFDM-Based Ultra-Wideband Systems, 2006, Signal Processing Systems Design and Implementatio, 2006. SIPS '06. IEEE Workshop on, pp. 165-170.
Choi Sang-Sung
Choi Sung-Woo
Kang Kyu-Min
Shin Cheol-Ho
Bocure Tesfaldet
Electronics and Telecommunications Research Institute
Ladas & Parry LLP
Williams Lawrence B
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