Computer Simulation and Field Experiment for Downlink Multiuser MIMO in Mobile WiMAX System

Table 1

Parameters for experimental mobile WiMAX system.

Parameters	Value
Frequency	2587 [MHz]
Bandwidth	10 [MHz]
Modulation scheme	QPSK/16QAM/64QAM
Convolutional code	1/2, 3/4, 5/6
Number of FFT points	1024
Effective OFDM symbol length	91.4 [s]
CP length	11.4 [s]
OFDM symbol length	102.9 [s]
Frame structure	OFDMA-TDD
Frame interval	5 [ms]
Number of OFDM symbols per frame	47
OFDM symbol ratio (DL : UL)	29 : 18
OFDM symbol ratio for data (DL : UL)	23 : 15
Number of transmitting antennas	6
Number of receiving antennas	2
Maximum number of streams	1 (Matrix A mode)
	2 (Matrix A/B mode)
Channel model	12-ray Rayleigh fading model
	(Maximum delay is 3.3 [s])
Doppler frequency	5 [Hz]
Mode	Matrix A, Matrix A/B
Parameters for PUSC	DL/UL
Number of data subcarriers	720/560
Number of subchannels	30/35
Number of OFDM symbols per slot	2/3