Abstract
This paper deals with Matlab simulation of Long Term Evolution system (Lte) to show data rate of the uplink layer from user equipment toward the tower with respect to the size of Desecrate Fourier Transform process (DFT) which will be increased from 2 to the size of Inverse Desecrate Fourier Transform process (IDFT). Also it shows the way of using Cyclic Prefix technique (CP) in Lte system and its types which effect on the data rate for uplink layer. Finally the results will show the value of Lte system data rate for different types of modulation and Cyclic Prefix which will be for many types of system bandwidth individually, and it will show the minimum and maximum values of (DFT) process size with the midpoint which is the best one.
Highlights
2.016 4.032 6.048 In Fig. 6 below the bandwidth will be (3MHz) which has a maximum value of Inverse Desecrate Fourier Transform process (IDFT) size is 256 and 180 subcarrier so the value of (M) will change form (2 to 180) to observe the changing in data rate in Mbit/s for many types of modulation (QPSK, 16QAM & 64QAM), each type studied in two cases of Cyclic Prefix
3GPP approved Long Term Evolution system (Lte) as a 4G communication system to improve data rate with reducing the effect of Inter Symbol Interference (ISI) and multipath channel and latency and reduces Bit Error Rate (BER) of data transmission between user equipment (UE) & evolved Node B
EXPERI M ENTAL In this paper a code of Matlab simulation used to simulate Lte system Release-8 running in different bandwidths (1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz & 20MHz) for fixed parameters to get the results of the uplink data rate. These results show data rate transmitted from UE to evolved Node B (eNB) with a different value for M before pushing the symbols toward the Inverse Desecrate Fourier Transform process (IDFT) process in the transmitter side, there are many parameters used in the simulation which fixed during all the study as shown below:
Summary
2.016 4.032 6.048 In Fig. 6 below the bandwidth will be (3MHz) which has a maximum value of IDFT size is 256 and 180 subcarrier so the value of (M) will change form (2 to 180) to observe the changing in data rate in Mbit/s for many types of modulation (QPSK, 16QAM & 64QAM), each type studied in two cases of Cyclic Prefix.
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