Analysis of performance of QAM system when subjected to sharpened Raised Cosine filter

Author

Pal, Monalisa ; Pal, Shovon

Author_Institution

Electron. & Commun. Eng., Techno India, Kolkata, India

fYear

2012

fDate

17-19 Dec. 2012

Firstpage

1

Lastpage

4

Abstract

This paper proposes to sharpen a pulseshaping Raised Cosine filter. Filter sharpening could be used when improved filtering is needed, but insufficient ROM space is available to store more filter coefficients, or as a way to reduce ROM requirements. QAM is one of widely used modulation techniques because of its efficiency in power and bandwidth. In this paper, the coefficients of raised cosine and sharpened raised cosine filter are generated in MATLAB. Utilizing these coefficients the performance of raised cosine filter and sharpened raised cosine filter is observed under different QAM(16QAM, 32QAM and 64QAM) by comparing their error rates and SNR using VSG (vector signal generator) and VSA(vector signal analyser).

Keywords

filtering theory; pulse shaping; quadrature amplitude modulation; MATLAB; QAM system performance analysis; ROM requirements; ROM space; VSA; VSG; filter coefficients; improved filtering; modulation techniques; sharpened raised cosine filter; vector signal analyser; vector signal generator; Phase error; QAM; error vector magnitude; filter sharpening; magnitude error; pulseshaping; raised cosine filter; signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers and Devices for Communication (CODEC), 2012 5th International Conference on

Conference_Location

Kolkata

Print_ISBN

978-1-4673-2619-3

Type

conf

DOI

10.1109/CODEC.2012.6509334

Filename

6509334