Symbol tracking for AM in-band on-channel radio receivers

Details Symbol tracking for AM in-band on-channel radio receivers Symbol tracking for AM in-band on-channel radio receivers

2005-11-14

2010-06-08

Payne, David C. (Department: 2611)

Pulse or digital communications

Receivers

Amplitude modulation

C375S354000

Reexamination Certificate

active

07733983

ABSTRACT:
A method for symbol tracking in AM in-band on-channel radio receivers comprises the steps of: receiving a stream of time domain samples; assembling a set of the time domain samples equal to a symbol time plus a half symbol delay in response to a symbol timing adjustment value for each symbol period; interpolating the time domain samples; partitioning the interpolated time domain samples into a first group of samples representing half-off symbols and a second group of samples representing on-time symbols; processing the first and second groups of samples to produce the symbol timing adjustment value; and outputting the second group of samples representing on-time symbols at a symbol rate. An apparatus that performs the method is also included.

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