A study of different matched filters in digital down converter

Author

Ruan, Chengfeng ; Hua, Jingyu ; Zheng, Zhilong ; Wu, Yuan ; Meng, Limin

Author_Institution

Zhejiang Provincial Key Lab. of Opt. Commun. Tech., Zhejiang Univ. of Technol., Hangzhou, China

fYear

2012

fDate

19-20 May 2012

Firstpage

2059

Lastpage

2063

Abstract

The square root (SR) Nyquist filter is always used as matched filter in digital systems to minimize the intersymbol interference (ISI), where the square root raised cosine filter (SRRC) is a popular choice. However, more filter choices substantially provide the engineer more flexibility in applications. Hence, this paper employs the SRRC, SR-Nyquist filter and low pass filter (LPF) as the matched filter in digital down converter (DDC), and evaluates their performance in terms of the noise and interference cancellation. Moreover, the fix-point bit error rate (BER) simulation is carried out to make the study approaching the real-world scenarios.

Keywords

convertors; digital filters; error statistics; interference suppression; intersymbol interference; low-pass filters; matched filters; DDC; ISI; LPF; SR Nyquist filter; SRRC; digital down converter; fix-point BER simulation; fix-point bit error rate simulation; intersymbol interference cancellation; low pass filter; matched filter; square root Nyquist filter; square root raised cosine filter; Attenuation; Band pass filters; Cutoff frequency; Finite impulse response filter; Matched filters; Passband; Strontium; Bit Error Rate; Digital Down Converter; FIR Filter; Square Root Nyquist filter; Square Root Raised Cosine Filter;

fLanguage

English

Publisher

ieee

Conference_Titel

Systems and Informatics (ICSAI), 2012 International Conference on

Conference_Location

Yantai

Print_ISBN

978-1-4673-0198-5

Type

conf

DOI

10.1109/ICSAI.2012.6223457

Filename

6223457