Signal enhancement in a near-field MIMO environment through adaptivity on transmit

Seunghyeon Hwang, Abdellatif Medouri, Tapan K. Sarkar

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


In this paper a technique is presented on how to enhance the received signals in a near field multi-input multi-output (MIMO) environment where beam forming is not possible. This is done through the use of adaptivity on transmit. This technique is based on the principle of reciprocity, is independent of the material medium in which it is transmitting, and incorporates near-field environments and multipath. The objective here is to select a set of weights adapted to each receiver to be applied to each transmitting antenna, which is a function of the user location, so that the transmitted signal at the carrier frequency may be directed to a particular receiver location while simultaneously minimizing the received signal strengths at other receiver locations. Numerical simulations have been made to illustrate the novelty of the proposed approach.

Original languageEnglish (US)
Pages (from-to)685-693
Number of pages9
JournalIEEE Transactions on Antennas and Propagation
Issue number2
StatePublished - Feb 2005


  • Adaptivity on transmit
  • Multi-input multi-output (MIMO)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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