Wireless Communication Technologies to Provide Large Increases in Spectral Efficiency

点击翻译按钮获取中文摘要

New methods and techniques are studied to greatly increase the spectral efficiency of current wireless communication systems in order to achieve the increases in peak data rates and overall data volume that is needed for future wireless systems. Using current long term evolution (LTE) communication systems as a starting point, we will study modifications to the multiple access techniques, the effect of increased number of receive antennas to be used in massive MIMO systems, new error control coding techniques that are powerful and fast but maintain reasonable levels of computational complexity and multiuser detection techniques in order to increase peak and average data rates significantly while keeping outage probabilities low. We will determine the performance of MIMO-OFDM and MIMO-SC-FDMA in the context of massive MIMO systems and propose novel coding, antenna selection and multiuser detection techniques in order to provide very high spectral efficiency in bps/Hz. We will examine new ways to use the zeros in the frequency domain of SC-FDMA so as to carry additional information as opposed to or in addition to being used for multiple access in the goal to improve both the power and spectral efficiencies of mobile uplinks. We will also study more power efficient channel impulse response estimation techniques so as to reduce the amount of overhead needed, further increasing the spectral efficiency of future wireless systems.