Joint Transmitter and Receiver Optimization for Fast Fading Mobile Radio Channels Using Deterministic Channel Modeling

对无线通信容量的需求的巨大增长产生了对新的调制、编码和检测方法的需求，这些方法更有效地使用在移动的无线电中遇到的多径衰落信道。 由于信道变化迅速，发射机和接收机通常没有针对当前信道条件进行优化，因此无法充分利用无线信道的潜力。 为未来的移动的无线电提出的较短波长只会加剧这些问题。 本研究针对快衰落信道，综合利用自适应调制编码技术、发射分集技术和衰落预测算法，为快衰落信道下的通信提供了一种新的途径。统一的思想是预测接收器处的未来衰落条件，并将这些预测馈送到发射器以优化发射信号。这项研究是一个跨学科的努力，在通信理论，物理和信号处理，包括新的物理模型多径衰落，信道预测和跟踪方法，自适应调制，编码和功率控制算法。这项工作的最终目标是更充分地利用无线通信信道的潜在容量，并在此过程中降低相关的功率和带宽要求。

The tremendous growth in demand for wireless communications capacity has created a need for new modulation, coding and detection methods that more efficiently use the multipath fading channels encountered in mobile radio. Since the channel changes rapidly, the transmitter and receiver are not generally optimized for current channel conditions, and thus fail toexploit the full potential of the wireless channel. The shorterwavelengths proposed for future mobile radio will only serve to aggravate these problems. This research focuses on joint utilization of adaptive modulation and coding techniques, transmitter diversity methods and fading prediction algorithms suitable for rapidly varying multipath fading channels.In this research, a new approach to communication over fast-fading channels is exploited. The unifying idea is to predict future fading conditions at the receiver, and to feed these predictions to the transmitter for the optimization of the transmitted signal. This research is an interdisciplinary effort in communication theory, physics, and signal processing that encompasses novel physical models for multipath fading,channel prediction and tracking methods, and adaptive modulation, coding and power-control algorithms. The ultimate goal of this work is to more fully exploit the potential capacity of wireless communication channels, and in the process reduce the associated power and bandwidth requirements.