Skip to main content
SpringerLink
Log in

Variable Modulation Scheme for Improved Reliability in the OFDM Systems

  • Published:
Wireless Personal Communications Aims and scope Submit manuscript

Abstract

In order to improve the reliability of the OFDM systems, this paper proposes the variable modulation scheme based on the condition of the channel between the transmitter and the receiver. The proposed scheme uses the codebook that is stored in advance at the transmitter and the receiver. The key idea of the variable modulation scheme is to use the similarity with the condition of the channel between the adjacent subcarriers in the OFDM system. From the simulation results, the proposed scheme has about 3 dB SNR gain at the BER of \(10^{-3}\) compared to the conventional scheme.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4

Similar content being viewed by others

References

  1. Tasi, Y. R., Huang, H. Y., Chen, Y. C., & Yang, K. J. (2013). Simultaneous multiple carrier frequency offsets estimation for coordinated multi-point transmission in OFDM system. IEEE Transactions on Wireless Communications, 12(9), 4558–4568.

    Article  Google Scholar 

  2. Jeon, J.-P., Lim, H. M., Park, H.-C., & Song, H.-K. (2014). An improved cooperative technique sharing the channel in OFDMA-based system. IEICE Transactions on Information and Systems, E97–D(12), 3222–3225.

    Article  Google Scholar 

  3. Ahn, J.-K., Jang, H.-W., & Song, H.-K. (2014). An improved low complexity detection scheme in MIMO–OFDM systems. IEICE Transactions on Information and Systems, E97–D(5), 1336–1339.

    Article  Google Scholar 

  4. Baek, M.-J., Yeo, S.-Y., You, Y.-H., & Song, H.-K. (2007). Low complexity ML detection technique for V-BLAST systems with DFE decoding. IEICE Transactions on Communications, E90–B(5), 1261–1265.

    Article  Google Scholar 

  5. Choi, H.-J., & Song, H.-K. (2014). Advanced QRD-M detection with iterative scheme in the MIMO–OFDM system. IEICE Transactions on Information and Systems, E97–D(2), 340–343.

    Article  Google Scholar 

  6. Ahn, J.-K., Yu, S.-J., & Song, H.-K. (2013). Channel condition number based switching detection scheme in MIMO–OFDM system. IEICE Transactions on Fundamentals, E96–A(1), 387–390.

    Article  Google Scholar 

  7. Yu, S.-J., Song, Y.-J., & Song, H.-K. (2011). Enhanced lattice-reducation aided detection for MIMO systems with QRD-M detector. IEICE Electronics Express, 8(10), 762–772.

    Article  Google Scholar 

  8. Baek, M.-S., You, Y.-H., & Song, H.-K. (2009). Combined QRD-M and DFE detection technique for simple and efficient signal detection in MIMO–OFDM system. IEEE Transactions on Wireless Communications, 8(4), 1632–1638.

    Article  Google Scholar 

  9. Peng, W., Ma, S., & Wang, J. (2007). Adaptive QRD-M detection with variable number of surviving paths for MIMO systems. In IEEE Conference Publications, (pp. 403–4088).

  10. Xiuyan, Z., Min, Z., & Qingqiang, L. (2013). Comparison of V-BLAST-OSIC algorithm and the QR decomposition algorithm. In IEEE Conference Publications, (vol. 02, pp. 1158–1162).

  11. 3GPP, TR 25.814 Ver. 7.1.0, Release 7. Further advancements for E-UTRA physical layer aspects.

  12. 3GPP, TR 36.814 Ver. 1.5.0, Release 9. Further advancements for E-UTRA physical layer aspects.

  13. IEEE std 802.11n. (2009) IEEE standard for information technology telecomunication and information exchange between systems local and metropolitan area networks specific requirements, Part 11: Wireless LAN medium access control (MAC) and physical layer (PHY) specifications, Amendment 5: Enhancement for higher throughput.

  14. Bohnke, R., Wubben, D., Kuhn, K., & Qingqiang, L. (2003). Reduced complexity MMSE detection for BLAST architectures. In IEEE Conference Publications, (vol. 04, pp. 2258–2262).

Download references

Acknowledgements

This work was supported by Institute for Information and Communications Technology Promotion (IITP) Grant funded by the Korea govemment (MSIP) (No. 2017-0-00217, Develoment of Immersive Signage Based on Variable Transparency and Multiple Layers) and supported by Institute for Information and Communications Technology Promotion (IITP) Grant funded by the Korea government (MSIP) (No. B0126-15-1076, Development of non-powered technology combined with ambient RF energy harvesting and Backscatter data transfer).

Author information

Authors and Affiliations

  1. uT Communication Research Institute, Sejong University, 98 Gunja-dong, Gwangjin-gu, Seoul, 143-747, Korea

    Yong-Jun Kim, Chang-Bin Ha & Hyoung-Kyu Song

Authors
  1. Yong-Jun Kim
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Chang-Bin Ha
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Hyoung-Kyu Song
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Hyoung-Kyu Song.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Kim, YJ., Ha, CB. & Song, HK. Variable Modulation Scheme for Improved Reliability in the OFDM Systems. Wireless Pers Commun 97, 603–611 (2017). https://doi.org/10.1007/s11277-017-4525-4

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11277-017-4525-4

Keywords

Search

Navigation