An adaptive MIMO transmission technique for LDPC coded OFDM cellular systems

Kwang Soon Kim, Yun Hee Kim, Jae Young Ahn

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

In this paper, an adaptive MIMO transmission scheme using QAM and LDPC code is proposed for an OFDM cellular system employing FDD. By approximating the LLR distribution to a Gaussian distribution, only two parameters, the mean and the normalized standard deviation, are required to be sent to the transmitter, which requires only a few more bits than those required in currently used single carrier cellular systems, such as cdma2000-1x EV-DO. It is shown by computer simulation that the proposed adaptive transmission scheme can provide up to 2 - 3dB gain over the conventional system using the mean SNR only, at the expense of only 3 more bits in the feedback information.

Original languageEnglish
Pages (from-to)761-764
Number of pages4
JournalIEEE Vehicular Technology Conference
Volume59
Issue number2
Publication statusPublished - 2004
Event2004 IEEE 59th Vehicular Technology Conference, VTC2004-Spring: Towards a Global Wireless World - Milan, Italy
Duration: 2004 May 172004 May 19

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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