3 publications

• Published Subscription 5 Jul 2018

  BER Analysis of Digital Modulation Schemes for OFDM System

  By Pragati Pradhan, Abhishek Lakshkar

  Abstract: The growth in the field of communication and the requirement of high-speed and secured data transmission are increasing day by day. Orthogonal frequency-division multiplexing modulation technique is a new technique which supports high-speed data transmission. It is a method of signal modulation that divides a high data rate modulating stream into several slowly modulated narrowband close-spaced subcarriers, and in this way, it is less sensitive to frequency-selective fading. The present …

  Published in International Journal of Digital Communication and Analog Signals · Vol. 4, Issue 1, 2018 · pp. 15–23 Read article →

• Published Subscription 23 May 2017

  2D Interpolation technique for Channel Estimation in OFDM Systems

  By Pragati Pradhan

  Abstract: The use of interpolation technique with low estimation error is imperative for estimating the channel impulse response at data subcarriers for pilot assisted channel estimation techniques in the Orthogonal Frequency Division Multiplexing (OFDM) systems. In this paper, a novel interpolation technique based on 2 d interpolation is presented. The proposed interpolation technique is based on minimizing the interpolation error and channel noise inherent in Least Square (LS) estimation. A comparative …

  Published in International Journal of Digital Communication and Analog Signals · Vol. 3, Issue 1, 2017 · pp. 27–34 Read article →

• Published Subscription 3 Apr 2017

  Comparison of Three Interpolation in OFDM Systems

  By Pragati Pradhan

  Abstract: Doppler shift and channel induced fading effects are more likely to induce inter carrier interferences (ICI), which are the challenging research area in the orthogonal frequency division multiplexing (OFDM). This paper uses channel estimation for canceling the effects of ICI from the received signals. One dimensional frequency domain comb-type channel estimation are considered because of its low computational complexity and effective tracking ability of the fast fading channel. The channel …

  Published in International Journal of Broadband Cellular Communication · Vol. 3, Issue 1, 2017 · pp. 1–9 Read article →