Fixed point FIR filter with adaptive truncation and clipping...

Details Fixed point FIR filter with adaptive truncation and clipping... Fixed point FIR filter with adaptive truncation and clipping...

2011-07-26

2011-07-26

Tran, Pablo N (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S126000, C455S213000, C455S232100, C455S340000, C455S341000

Reexamination Certificate

active

07986932

ABSTRACT:
A fixed point finite impulse response (FIR) filter comprising: 1) an input stage for receiving an input signal as a sequence of input samples comprising: i) delay elements connected in series for receiving and shifting N sequential input samples; ii) multipliers, each multiplier receiving a selected one of the N sequential input samples from the delay elements and multiplying the selected input sample by a corresponding coefficient to produce an intermediate product; and iii) a summer for receiving and adding N intermediate products from the multipliers to produce an output sum signal comprising a sequence of output sum samples; and 2) an output stage for truncating k least significant bits (LSBs) from each of the output sum samples, wherein k is a variable number.

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