Application Article

Implementation of a Zero-Forcing Precoding Algorithm Combined with Adaptive Beamforming Based on WiMAX System

Table 1

Parameters for implementation.

ParametersBase stationUser

Number of antennas 3 * 2 1
PrecodingZF
BeamformingOLB algorithm
WaveformWiMAX
FECConvolutional Turbo Coding,
Frame duration (DL/UL)3.1104 ms/1.728 ms (for 5 ms)
TTG/RTG121.2  s/40.4  s (161.6 µs)
FFT size1024
Number of symbols (DL/UL)27/15
Modulation scheme16 QAM
2.3 GHz