Frame design and throughput evaluation for practical multiuser MIMO OFDMA systems

Yong Up Jang, Jingon Joung, Won Yong Shin, Eui Rim Jeong

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

This paper describes the design of a time-division duplexing frame with a variety of pilots for multiuser multiple-input-multiple-output orthogonal frequency-division multiple access (MU-MIMO OFDMA) systems, where the base station and users are equipped with four and two transmitting and receiving antennas, respectively. In addition, a simplified scheduling algorithm for the MU-MIMO OFDMA is proposed, and its computational complexity is analyzed. The proposed scheduling algorithm shows comparable sum achievable rates to the optimal MU-MIMO OFDMA scheduling that searches for user pairs in an exhaustive manner, whereas its complexity is fairly reduced. Furthermore, to verify the performance of MU-MIMO OFDMA systems that employ the proposed frame structure and scheduling algorithm, a system-level comparison of the average cell throughputs between the proposed MU-MIMO and the conventional MIMO OFDMA systems is numerically performed in a practical cellular environment. As a result, vital information on how we can apply MU-MIMO OFDMA schemes in cellular environments is provided.

Original languageEnglish
Article number5928438
Pages (from-to)3127-3141
Number of pages15
JournalIEEE Transactions on Vehicular Technology
Volume60
Issue number7
DOIs
Publication statusPublished - 2011 Sep 1

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All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics

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