| In order to meet the diverse Quality of Service (QoS) requirements of new mobile applications in the adverse wireless channels, there are many challenges in various aspects of wireless networks, including transceiver designs that provide higher spectral efficiency in the physical layer and efficient wireless network resource allocation algorithms. In this thesis, we address and contribute new solutions to two important problems. First, we devise a space-time transceiver design that provides optimal signaling efficiency in a wireless broadcast environment. In this transceiver design, we jointly optimize the transmit signature code and receive filters in order to achieve the best power efficiency at the transmitter, while satisfying the Signal to Noise Ratio (SNR) requirements at different receivers. Second, we develop efficient space-time receivers for a frequency-selective multiple transmit, multiple receive antenna (MIMO) system that strives for higher information data rates. In these space-time receivers, the spatial and temporal dimensions are effectively decoupled in order to achieve desirable tradeoffs between algorithm performance and numerical complexity. |
