0122229现代数字通信与编码理论 December 20,2008 XDU,Winter 2008 Lecture Notes Chapter 8 Space-Time Coded-Modulation for Multiple Antenna Systems (/for MIMO Channels) The advent of multiple-input-multiple-output (MIMO)space-time coded wireless systems has recently emerged as one of the most significant technical breakthroughs in modern communications.The research on MIMO systems,including the study of channel requirement of increasing bandwidth and transmit power). Note:The materials presented in Sections 8.3 and 8.6.3 are based largely on B.Vucetic's lecture notes. 8.1 Introduction An MIMO system is an arbitrary wireless communication system in which the transmitter as well as the receiver is equipped with multiple antenna elements.A core idea in MIMO systems is space-time signal processing in which time is complemented with the spatial dimension inherent in the use of multiple spatially distributed ntennas.MIMO effectively takes advantage of rand ng and multipath delay 图81给出了 read for ing transfer rate 有N根发送天线、M根接收天线的MMO系统框图。下图是采用不 同天线配置时的通信系统。 SISO MIMO TX/R< 乙RxWX SIMO MIMO-MU MISO Figure 8.0 Different antenna configurations in space-time systems 1 0122229 现代数字通信与编码理论 December 20, 2008 XDU, Winter 2008 Lecture Notes Chapter 8 Space-Time Coded-Modulation for Multiple Antenna Systems (/for MIMO Channels) The advent of multiple-input–multiple-output (MIMO) space-time coded wireless systems has recently emerged as one of the most significant technical breakthroughs in modern communications. The research on MIMO systems, including the study of channel capacity and the design of communication schemes, demonstrates that MIMO systems have a potential to significantly increase spectral efficiency in wireless communications (without the requirement of increasing bandwidth and transmit power). Note: The materials presented in Sections 8.3 and 8.6.3 are based largely on B. Vucetic’s lecture notes. 8.1 Introduction An MIMO system is an arbitrary wireless communication system in which the transmitter as well as the receiver is equipped with multiple antenna elements. A core idea in MIMO systems is space-time signal processing in which time is complemented with the spatial dimension inherent in the use of multiple spatially distributed antennas. MIMO effectively takes advantage of random fading and multipath delay spread for multiplying transfer rates. 图 8.1 给出了一个有 N 根发送天线、M 根接收天线的 MIMO 系统框图。下图是采用不 同天线配置时的通信系统。 Figure 8.0 Different antenna configurations in space-time systems