Realisation of AWGN Channel Emulation Modules Under SISO and SIMO Environments for 4G LTE Systems

Abstract

The testing of a wireless transmitter and receiver in the real-world channel is tedious. So, a channel emulator using FPGA helps in the testing of transmitter and receiver by providing a test environment that simulates a real-world wireless channel. Since FPGAs are flexible, cheap and reconfigurable, they are used in designing an AWGN channel emulator for 4G LTE for Single Input Single Output (SISO) and Single Input Multiple Output (SIMO) environments. In this paper, three basic modules: transmitter, channel estimation and receiver modules are synthesized. In the transmitter module, the input data is 64QAM modulated and transmitted into the channel. In the channel estimation module, the transmitter data gets multiplied with the channel coefficients and then added with the noise present in the channel. In the receiver module, the data is detected using MMSE estimation. These are implemented in Virtex-5 device using PlanAhead tool and the Resource and Power Estimations are discussed.