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BER Analysis of LTE-4G Standard Rayleigh Flat Fading Channel with Adaptive Modulation

  • Rajeswara Rao GangulaEmail author
  • Sasibhushana Rao Gottapu
Conference paper
Part of the Lecture Notes in Networks and Systems book series (LNNS, volume 33)

Abstract

It is a challenging task to improve reliable and high-speed data communication between Transmitter and Receiver. Achieving high data rate using block codes and convolution codes is still questionable through a wireless channel. Turbo codes are a class of high performance forward error correction (FEC) codes with OFDM with adaptive Modulation for 4G and LTE applications. In this paper, BER analysis is carried out for TURBO-coded OFDM data with adaptive modulation mode switching using BPSK, QPSK, 16QAM, and 64QAM. Adaptive modulation scheme is assisted by decision feedback equalizer (DFE) which controls modulation mode. Its output SNR is used as a switching metric. DFE is used to select modulation mode. It is observed that average spectral efficiency (bits per second/Hz) is much higher for adaptive modulation scheme. For higher modulation scheme average spectral efficiency is gradually increases up to 40 dB, that indicates its throughput is much higher in comparison with fixed modulation modes.

Keywords

Data communication Block codes Convolution codes Turbo code forward error correction 16QAM 64QAM Adaptive modulation 

References

  1. 1.
    Rao KD (2015) Channel coding techniques for wireless communications. Springer, India. ISBN 978-81-322-2291-0Google Scholar
  2. 2.
    Steele R, Webb WT (1991) Variable rate QAM for data transmission over Rayleigh fading channels. In: Wireless’91. IEEE, Calgary, Alberta, pp 1–14Google Scholar
  3. 3.
    Choi K, Liu H (2016) Problem-based learning in communication systems using Matlab and Simulink. ISBN: 9781119060345Google Scholar
  4. 4.
    Zarrinkaub H (2014) Understanding LTE with MATLAB: from mathematical Foundation to simulation, performance evolution and implementation. John Wiley & Sons, Ltd., Hoboken. ISBN: 9781118443415Google Scholar
  5. 5.
    Bahai ARS, Saltzberg (1999) Multi-carrier digital communications: theory and applications of OFDM. Kluwer Acadamic/Plenum Publishers, N.Y.Google Scholar
  6. 6.
    Burr AG, White GP University York, York YO10 5DD, UK email: alister@ohm.york.ac.ukGoogle Scholar
  7. 7.
    Hanzo L, Wong CH, Yee MS Adaptive wireless transceivers: turbo-coded, turbo- equalised and space-timecoded TDMA, CDMA, MC-CDMA and OFDMSystemsGoogle Scholar
  8. 8.
    Sagias NC, Papaharalabos S, Mathiopoulos PT (2015) Cooperative DVB-SH satellite broadcasting systems with rotated signal constellations. China communicationsGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Rajeswara Rao Gangula
    • 1
    Email author
  • Sasibhushana Rao Gottapu
    • 2
  1. 1.G.V.P. College of Engineering (Autonomous)VisakhapatnamIndia
  2. 2.Andhra University college of EngineeringVisakhapatnamIndia

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