International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
Open Access | Fully Refereed | Peer Reviewed

ISSN: 2319-7064


Downloads: 122

M.Tech / M.E / PhD Thesis | Electronics & Communication Engineering | India | Volume 5 Issue 7, July 2016


Modified Welch's PSD based on Parallel FFT

Sreelekha S, Sabi S


Abstract: Spectral analysis is the most widely used methods for data analysis in radar, communication, geophysics, oceanography, atmospheric science, astronomy, hydrology and biology. This paper presents a low-complexity modified algorithm and architectural view to compute the power spectral density (PSD) using the Modified Welch Method. Welchs method is asymptotically unbiased estimate of the power spectrum by averaging the subsample periodograms. Welch algorithm also provides an excellent estimate of spectral power. But high computational complexity is the main drawback of Welch method. To reduce the high computational complexity use 50 % overlap by computing N/2-point FFT, where N is the length of the window and is merged with previous N/2-point FFT and then calculate the N-point FFT. Frequency-domain windowing operation is preferred for high performance. In order to improve the computational speed parallel FFT approach is used.


Keywords: power spectral density, low-power, low-complexity, Welch method, windowing, Fast Fourier Transform


Edition: Volume 5 Issue 7, July 2016,


Pages: 345 - 349


How to Cite this Article?

Sreelekha S, Sabi S, "Modified Welch's PSD based on Parallel FFT", International Journal of Science and Research (IJSR), https://www.ijsr.net/get_abstract.php?paper_id=ART2016130, Volume 5 Issue 7, July 2016, 345 - 349

How to Share this Article?

Enter Your Email Address


Similar Articles with Keyword 'power spectral density'

Downloads: 119

Research Paper, Electronics & Communication Engineering, India, Volume 4 Issue 1, January 2015

Pages: 730 - 734

Analysis of FFT Based Spectrum Detection Model using Modified Periodogram Algorithm

C. Basavaraju, Dr. Chandrakanth.H.G

Share this Article

Downloads: 134

M.Tech / M.E / PhD Thesis, Electronics & Communication Engineering, India, Volume 4 Issue 9, September 2015

Pages: 189 - 192

Comparability of Power Spectral Density Estimation of EMG Signals Using Non-Parametric Methods

M. Karuna, B. Mahalakshmi

Share this Article

Similar Articles with Keyword 'windowing'

Downloads: 111

Review Papers, Electronics & Communication Engineering, India, Volume 4 Issue 9, September 2015

Pages: 1863 - 1865

Review: MFCC & Multitaper MFCC Feature Extraction for Speaker Verification

Rupali G Shintri, S. K. Bhatia

Share this Article

Downloads: 130

Research Paper, Electronics & Communication Engineering, India, Volume 2 Issue 7, July 2013

Pages: 47 - 51

Reduction of Inter Carrier Interference using Extended Kalman Filter in OFDM Systems for Different Channel Models

A. Manikandan, M. Sandhiya

Share this Article

Similar Articles with Keyword 'Fast Fourier Transform'

Downloads: 103

M.Tech / M.E / PhD Thesis, Electronics & Communication Engineering, India, Volume 4 Issue 9, September 2015

Pages: 1272 - 1275

Doppler Frequency Effect and BER Performance of FFT Based OFDM System

C Sreevidya, G Sunil

Share this Article

Downloads: 104

Research Paper, Electronics & Communication Engineering, China, Volume 3 Issue 10, October 2014

Pages: 1300 - 1302

Determination of Good and Bad Signal in a Given Random Signals Using MATLAB

Charles Okanda Nyatega, Ogunlade Michael Adegoke

Share this Article

Similar Articles with Keyword 'power'

Downloads: 186 | Monthly Hits: ⮙1

Informative Article, Electronics & Communication Engineering, India, Volume 4 Issue 10, October 2015

Pages: 188 - 191

Realization of Smart City Using 5G Cognitive Radio

Lalit Chettri, Syed Sazad

Share this Article

Downloads: 0

Research Paper, Electronics & Communication Engineering, India, Volume 10 Issue 6, June 2021

Pages: 1505 - 1508

Design of Two Stage CMOS Operational Amplifier

Rahul Kumar

Share this Article

Similar Articles with Keyword 'spectral'

Downloads: 186 | Monthly Hits: ⮙1

Informative Article, Electronics & Communication Engineering, India, Volume 4 Issue 10, October 2015

Pages: 188 - 191

Realization of Smart City Using 5G Cognitive Radio

Lalit Chettri, Syed Sazad

Share this Article

Downloads: 98

Survey Paper, Electronics & Communication Engineering, India, Volume 7 Issue 9, September 2018

Pages: 1351 - 1354

Antenna Types for Small Cells Base Stations

Priyadarshini K Desai, Dr. Basavara J I Neelgar, Keerti Kulkarni, Reena Kulkarni

Share this Article

Similar Articles with Keyword 'density'

Downloads: 98

Survey Paper, Electronics & Communication Engineering, India, Volume 7 Issue 9, September 2018

Pages: 1351 - 1354

Antenna Types for Small Cells Base Stations

Priyadarshini K Desai, Dr. Basavara J I Neelgar, Keerti Kulkarni, Reena Kulkarni

Share this Article

Downloads: 99

Research Paper, Electronics & Communication Engineering, India, Volume 4 Issue 9, September 2015

Pages: 1930 - 1934

Channel Characterization for Underwater Acoustic Communcation in the Shallow Sea-Water

Karan Shankar, K. Saraswathi

Share this Article
Top