Complex Orthogonal Space-time Block Coding For Mimo Wireless Communication System,

Today is the crucial time for the progress of wireless telecommunication, the conflict between the continual rising demand and the limited frequency become the power and the challenge of study the high profitability frequency technology. In all of these technologies, MIMO wireless telecommunication system base on multi-antenna has the endless potential, become the certain approach to utilize space resources adequately. MIMO is the key technology of 3G and the future mobile telecommunication system, which can increase the channel capacity effectively using the channel multipath effect and infinite improve the wireless telecommunication reliability. Space-Time code is the key technology of MIMO channel, which is novel and potential scheme can enhance the profitability of frequency effectively. It utilize transmit diversity of MIMO channel adequately, which characteristic include high quality, strong reliability, high speed, easy to implement, low system cost etc. It has been noticed widely and bringed into the 3GPP standard because it's significance.In recent years, because 3G mobile telecommunications system request high voice quality and high bit data service, the transmit diversity with space-time code is regarded especially. Space-time code is a novel technology of code and signal process, which transmit and receive signal employ many transmit and receive antennas. Space-time code can improve the information capacity and data speed of wireless telecommunication system. It import the correlation between time field and space field into signal among different transmit antennas, which can be decode at receiver. It can achieve more coding gain than the system without space-time code without bandwidth losing. The structure of space-time code can increase telecommunication capacity of wireless system effectively with simple receiver.At present, research of space-time code focus on two aspects, one is optimize the algorithm of space-time code/decode, for example decrease the complicated degree of operation or design new space-time code matrix and algorithm; the other is space-time code and other technologies combine to form many high speed transmit scheme, the typical example is combine space-time code with modulation technology and channel code to form many optimum scheme.At first, this paper introduce the research background of MIMO wireless telecommunication system and the essential concept and sort of space-time code, I...