| With the dramatic increase of hot spots and pushing of multimedia applications, wireless communication systems are undergoing the evolution to a broadband and high-speed direction. High-throughput transmission requirements of the next-generation wireless systems put forward a challenge for both media access control (MAC) layer and physical layer (PHY) technologies, making MAC-PHY cross-layer communications a critical research subject.The thesis is mainly based on the National Science and Technology Major Project "Research and verification of key technologies for the Very-High-Throughput Wireless LAN System". The project carries out research and hardware platform verification on key technologies of the next-generation WLAN wireless interface. The thesis focuses on the design, implementation and cross-layer joint applications of MAC-PHY interface in the high-speed wireless communication systems.Firstly, a high-speed wireless communication system is presented. Then the protocol and hardware platform architecture are introduced.Secondly, the thesis puts forward a novel MAC-PHY cross-layer interface (MPI) protocol, based on field programmable gate array (FPGA) and peripheral component interconnect express (PCIe) bus. Simulation and hardware implementation are conducted, verifying that the proposed protocol can support a maximum data rate of2.50Gbps, and reach a throughput of1.21Gbps, achieving high performance as expected. Thus the proposed MPI can meet the high-speed and real-time transmission requirements of next generation wireless communication systems.Finally, based on the above-mentioned MPI and cross-layer design schemes, the thesis researches adaptive modulation and coding (AMC), and designs a hardware realization scheme for AMC. Besides, in conjunction with MPI, the present decoder of low density parity check codes (LDPC) is optimized, with a MAC-PHY cross-layer joint design scheme devised. |
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