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Advanced Computational and Communication Paradigms pp 84–91Cite as

Pilot Subcarrier Based Channel Estimation in OFDM System

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Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 475))

Abstract

Channel estimation is essential at receiver for accurate channel state information in orthogonal frequency division multiplexing (OFDM) system. Pilot subcarriers are used in pilot-assisted estimation for the channel. In this paper, we propose an algorithm for mapping 4-bit pilot bits into gray-coded complex constellation and a technique to insert gray-coded complex pilot symbols into OFDM stream before transmission for proper channel estimation. Gray-coded pilot symbol constellation mapping and DFT-based time-varying system is implemented in Matlab using LS estimation techniques. Our proposed algorithm illustrates superior performance over the cross-entropy optimization, stochastic sequential search (SSS), and stochastic parallel search (SPS) for time-varying system.

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Author information

Authors and Affiliations

  1. IKG Punjab Technical University, Kapurthala, India

    Harjeet Singh

  2. GZS Campus College of Engineering & Technology, Bathinda, Punjab, India

    Savina Bansal

Authors
  1. Harjeet Singh
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  2. Savina Bansal
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Corresponding author

Correspondence to Harjeet Singh .

Editor information

Editors and Affiliations

  1. Department of Computer Application, RCC Institute of Information Technology, Kolkata, West Bengal, India

    Siddhartha Bhattacharyya

  2. Department of Electrical Engineering, Indian Institute of Technology Delhi, New Delhi, Delhi, India

    Tapan Gandhi

  3. Department of Computer Science and Engineering, Sikkim Manipal Institute of Technology, Rangpo, Sikkim, India

    Kalpana Sharma

  4. Department of Computer and System Sciences, Visva-Bharati University, Santiniketan, West Bengal, India

    Paramartha Dutta

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Cite this paper

Singh, H., Bansal, S. (2018). Pilot Subcarrier Based Channel Estimation in OFDM System. In: Bhattacharyya, S., Gandhi, T., Sharma, K., Dutta, P. (eds) Advanced Computational and Communication Paradigms. Lecture Notes in Electrical Engineering, vol 475. Springer, Singapore. https://doi.org/10.1007/978-981-10-8240-5_9

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  • DOI: https://doi.org/10.1007/978-981-10-8240-5_9

  • Published:

  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-10-8239-9

  • Online ISBN: 978-981-10-8240-5

  • eBook Packages: EngineeringEngineering (R0)

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