Earticle

초록

영어

MIMO (multi-input multi-output)–OFDMA (orthogonal frequency division multiple access) systems have been recognized as a key technology for next-generation wireless communications, offering high spectral efficiency and multiuser support. However, their performance is constrained when the number of users exceeds the allocated bandwidth and further deteriorates under adverse wireless environments. In this paper, we propose a novel scheme that integrates beamforming and distributed subcarrier allocation (DSA) in MIMO–OFDMA systems to address performance degradation caused by interference and adverse channel conditions. We mitigate interference through beamforming and enhance robustness against channel impairments via distributed allocation, thereby improving BER performance and increasing user capacity. We further conduct computer simulations to validate the effectiveness of the proposed scheme in terms of both user capacity and BER performance, demonstrating its potential as a valuable contribution to next-generation wireless communication research.

목차

Abstract
1. Introduction
2. MIMO-OFDMA system combining beamformer with DSA: Uplink
3. Simulation results
4. Conclusion
Reference

키워드

저자

• Chan Kyu Kim [ Professor, Department of Electronic Engineering Hanbat University, Korea ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Internet, Broadcasting and Communication

• 간기

  계간

• pISSN

  2288-4920

• eISSN

  2288-4939

• 수록기간

  2009~2025

• 십진분류

  KDC 326 DDC 380