Space Time Trellis Code Frequency Index Modulation with Neuro-LS Channel Estimation in OFDM

  • Sarita Yadav M.Tech Scholar Department of EC, PCST, Bhopal
  • Ashish Nema Assistant Professor Department of EC, PCST, Bhopal
  • Jitendra Mishra Associate Professor Department of EC, PCST, Bhopal

Abstract

In wireless communication, orthogonal frequency division multiplexing (OFDM) plays a major role because of its high transmission rate. In space-time shift keying (STSK), the information is conveyed by both the spatial and time dimensions, which can be used to strike a trade-off between the diversity and multiplexing gains. On the other hand, orthogonal frequency division multiplexing (OFDM) relying on index modulation (IM) conveys information not only by the conventional signal constellations as in classical OFDM, but also by the indices of the subcarriers. In this paper compressed sensing(CS) is studied in order to increase throughput and bit-error performance by transmitting extra information bits in each subcarrier block as well as to decrease the complexity of the detector. In this paper, soft trellis decoding algorithm is implemented with channel estimation using Neuro-LS technique. The result analysis shows the better performance of trellis decoder with respect to BER and Neuro-LS channel estimation with respect to BER.

Published
September 2019
How to Cite
Yadav, S., Nema, A., & Mishra, J. (2019). Space Time Trellis Code Frequency Index Modulation with Neuro-LS Channel Estimation in OFDM. INTERNATIONAL JOURNAL ONLINE OF SCIENCE, 5(9), 7. Retrieved from http://ijoscience.com/ojsscience/index.php/ojsscience/article/view/226