APPARATUS AND METHOD FOR GENERATING SMART ANTENNA BEAMS IN BROADBAND WIRELESS COMMUNICATION SYSTEM

摘要

The present invention relates to a smart antenna beam forming in a broadband wireless communication system, and calculates a channel coefficient for each subcarrier using the received preamble signal, and calculates and outputs an average noise power using the preamble signal or a pilot signal; A noise power calculator and a representative for dividing an entire frequency band into a plurality of subbands, and calculating and outputting a representative beam coefficient for each of the plurality of subbands by using a channel coefficient for each subcarrier and the average noise power. A beam coefficient calculator and a linear interpolator for generating beam coefficients for all subcarriers by linear interpolation between a plurality of representative beam coefficients from the representative beam coefficient calculator. As such, the present invention has an advantage in that the amount of computation (complexity) can be significantly reduced by performing the MMSE operation performed for each tone by sub-band.;Smart Antenna, SDMA, Beam Coefficient, MMSE, Linear Interpolation