Multi-Standard Programmable Baseband Modulator for Next Generation Wireless Communication

Hatai, Indranil; Chakrabarti, Indrajit

doi:10.5121/ijcnc.2010.2406

Cited by 1 publication

(1 citation statement)

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“…In many practical cases, RRC filters are commonly realized by direct-form FIR filters truncated by using rectangular or other window functions [1]. Distributed arithmetic (DA) algorithm studied in [9] is also used to realize the RRC filters. A method to directly synthesis the waveform proposed in [10] is very efficient way to generate RRC pulses, although it can not be used for matched filtering.…”

Section: Introductionmentioning

confidence: 99%

Realization of Root Raised Cosine Roll-Off Filters Using a Recursive FIR Filter Structure

Mukumoto

Wada

2014

IEEE Trans. Commun.

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Root raised cosine roll-off (RRC) filter is one of the most fundamental elements in modern digital communications. This paper proposes a new method to efficiently realize the RRC filter. The method employs cubic Hermite interpolation to obtain a piecewise-polynomial approximation for the impulse response of the RRC filter. Then, the approximated impulse response is efficiently realized by using a transversal filter with a very small number of taps followed by integrators with simple recursive structure, named cascaded recursive finite impulse response (CR-FIR) filter. As an example, an RRC filter with roll-off factor 0.5 is constructed by using the CR-FIR filter with only nine multipliers. Performance of the RRC filter in matched filtering is examined by computer simulations. Then, it is shown that the constructed RRC matched filter has nearly the same performance as the ideal filter.

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Section: Introductionmentioning

confidence: 99%