Venture Pacific Law, PC
Methods and systems for optimal PN phase detection in DTMB receivers
A method and system for pseudorandom noise (“PN”) phase detection in digital terrestrial multimedia broadcast (“DTMB”) receivers. This method selects a detection range of symbols from a frame of the received signal; applies FFT to the PN portion of each of the symbols in the detection range to generate Hn(k); applies phase rotation to Hn(k) to obtain phase rotated  for the PN portion of the symbols in the detection range; applies differential operations to  to generate Hpd ; sums the Hpd to generated Hsum; calculates a value Q as a function of Hsum; and determines the PN phase offset as a function of Q and a predefined threshold.
Amlogic Co., Ltd.
H H H H H
H04L H04L H04L H04B H04L
inventional inventional inventional additional inventional
Jinhong Guogang
Zhang Li