Research On The Control Channels Of IEEE 802.16m

IEEE 802.16m is the next generation Mobile WiMAX standard, and is called WiMAX2. It is also one of the two standards of the IMT-Advanced. Comparing with its predecessors, such as WiMAX and LTE, the IEEE 802.16m can support much. higher data rate. To achieve this, reliable control channels are very important. In this thesis, we mainly investigate the control channels of IEEE 802.16m.We firstly analyze how the IEEE 802.16m system allocates resources for the control channels to achieve higher frequency diversity. Then, based on the different structures of different control channels, such as downlink P-SFH, S-SFH, Assignment A-MAP, uplink HARQ feedback, bandwidth request channels, etc., we propose their receiving algorithms, and compare their performances.In practical communication systems, dual-polarized antennas are widely used to reduce the cost and the space of the base stations. Comparing with the uni-polarized antennas, which are commonly used in theoretical analysis, the dual-polarized MIMO channel has some special properties. By leveraging these properties, we can achieve higher reliability. At the end of this thesis, we propose an optimized control channel design for the systems using dual-polarized antennas. This optimized design can potentially be used in IEEE 802.16m control channels to achieve better performance.