Linear precoder design with spatial multiplexing for MIMO system

Abdulla Al Suman, Md. Kafil Uddin, Lakshman Saha, Tanvir Ahmed, Md. Munjure Mowla

Research output: Contribution to journalArticlepeer-review


This paper presents linear precoder design with spatial multiplexing for multiple-input multiple-output (MIMO) system with perfect knowledge of channel state information at transmitter (CSIT) restoring the low complexity at both transmitter and receiver, subject to a total transmit power constraint. Assuming Rayleigh fading channel and using a maximum-likelihood detector at receiver, we show that the proposed precoder is a function of noise variance and the eigenvectors of the estimated channel matrix. The singular value decomposition (SVD) method and standard water filling algorithm are used for designing the precoder and beam power allocation respectively. Simulation results are provided to illustrate the significance performance gain achieved by using the proposed precoder. The precoder shows the bit error rate (BER) of 10-5.5 at 2dB signal to noise ratio (SNR). The precoder may be promising in wireless data transmission application especially for worldwide interoperability for microwave access (WIMAX).
Original languageEnglish
Pages (from-to)51-57
Number of pages7
JournalAmerican Academic & Scholarly Research Journal
Issue number1
Publication statusPublished - Jan 2014
Externally publishedYes


  • multiple-input multiple-output
  • spatial multiplexing
  • singular value decomposition
  • linear precoder
  • standard water filling algorithm

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