Effective Scheme of Channel Tracking and Estimation for Mobile WiMAX DL-PUSC System

Table 1

Profile parameters.

Bandwidth	8.75 MHz	FFT size	1024
Sampling factor $n$	8/7	Number of used subcarriers N used	840
Sampling frequency	10 MHz	Frame structure	1 preamble symbol + 48 data symbol
Subcarrier space	9.765625 KHz	Modulation mode	QPSK 16-QAM 64-QAM
Useful symbol time $Tb$	102.4 μs	CP ratio G	1/8
Guard interval $Tg$	12.8 μs	Channel coding	CC(171,133) rate $1/2$
OFDM symbol time $Ts$	115.2 μs	Carrier frequency	2.3 GHz
Number of user	3	System mode	DL-PUSC