Conference Papers

Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506

Browse

Filters

2015 - 20202

Settings

Author: search.filters.author.Jacob, N.Has files: No

Search Results

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Bit error rate analysis of coded OFDM for digital audio broadcasting system, employing parallel concatenated convolutional turbo codes
    (Institute of Electrical and Electronics Engineers Inc., 2015) Jacob, N.; Sripati, U.
    In this paper we present a study of Bit Error Rate (BER), for Digital Audio Broadcasting (DAB) system, employing Coded OFDM with different channel coding schemes. Analysis is carried out for convolutional coded and turbo coded data in an Additive White Gaussian Channel (AWGN) based on different constraint lengths and code generator polynomials used for coding. A comparative study on the computational complexity is also done by applying an audio signal and measuring the data processing time per frame, on computers with different processor speeds. It is shown that a coding gain of approximately 6 dB is achieved using turbo coding when compared to convolutional coding, at a cost of higher computational complexity. © 2015 IEEE.
  • No Thumbnail Available
    Item
    Omega Shaped Complementary Split Ring Resonator Loaded Bandwidth Reconfigurable Antenna for Cognitive Radio Applications
    (Elsevier B.V., 2020) Jacob, N.; Kulkarni, M.; Kandasamy, K.
    This paper presents a bandwidth reconfigurable, circular monopole antenna loaded with omega shaped complementary split ring resonator (omega-CSRR). The CSRR is designed to produce band stop response at desired frequency, in order to control bandwidth. Two slots are connected to the CSRR using PIN diodes to form the arms of omega-CSRR. Switching the diodes, ON/OFF will vary the length of arms of omega. This will vary the stop band, resulting in tuning of impedance bandwidth. Two additional slots loaded on the ground plane, controls the lower and upper band limits. Ultra wide band (UWB) response (2.6GHz - 12GHz) and narrow band response are obtained. The bandwidth of narrow band is varied from 1.5GHz to 4.85GHz, by maintaining the center frequency at 6GHz. The impedance bandwidth percentage ranges from 26% to 82.2%, exhibiting an increase by a factor of 3.16. © 2020 The Authors. Published by Elsevier B.V.