Receiver and method performing adaptive overlap and add...

Details Receiver and method performing adaptive overlap and add... Receiver and method performing adaptive overlap and add...

2007-03-27

2011-11-01

Fan, Chieh M (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S260000, C375S316000, C375S285000, C375S346000, C375S349000

Reexamination Certificate

active

08050348

ABSTRACT:
A receiver performing an adaptive overlap and add (OLA) function in a multi band orthogonal frequency division multiplexing (OFDM) scheme and a method using the receiver. The receiver performing the OLA function in the multi band OFDM includes a channel estimator to estimate a delay spread from a digital input signal; a signal-to-noise ratio (SNR) estimator to estimate an SNR from the digital input signal; and an overlap and add (OLA) module to determine an OLA length based on the estimated delay spread and the estimated SNR and to perform an OLA according to the determined OLA length, wherein the OLA module adds, to header samples of an OFDM symbol, tail samples corresponding to the estimated delay spread of the OFDM symbol corresponding to the digital input signal.

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