MODELLING AND ARCHITECTURE DESIGN OF WIMAX 802.16D BASEBAND PROCESSOR: IQ IMBALANCE, SYNCHRONIZER AND EQUALIZER

• Main Author: KARLINA , RIAFENI
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/12558
• Institution: Institut Teknologi Bandung

Among some factors that influence the performance of Wimax 802.16d baseband system are the channel characteristic, synchronization, and impairment of frontend components such as IQ imbalance and carrier frequency offset between receiver and transmitter. The problems stated above can be handled by using IQ imbalance compensator, synchronizer and equalizer. This thesis present IQ imbalance using Adaptive method, synchronizer using Fine Estimation, and equalizer using Least Square and Moving Average Update. The process of design is started by choosing algorithm, systems modeling, hardware architecture design, then bit precision modeling. Performance of designed estimator module is measured from Mean Square Error (MSE) value, while compensator module is measured from Bit Error Rate (BER) of the system. Simulation is done in some type of channels, like AWGN, ITU and SUI, using computing tool Matlab 7.0. Simulation results show that the designed modules give better performance for about 5 dB compared with receiver sensitivity requirement for AWGN channel.