Wireless Communication Technologies to Provide Large Increases in Spectral Efficiency

研究了新的方法和技术以大大增加当前无线通信系统的频谱效率，以便实现未来无线系统所需的峰值数据速率和总数据量的增加。 使用当前的长期演进（LTE）通信系统作为出发点，我们将研究对多址技术的修改，在大规模MIMO系统中使用的接收天线数量增加的效果，新的差错控制编码技术是强大和快速的，但保持合理水平的计算复杂性和多用户检测技术，以便显着增加峰值和平均数据速率，保持低中断概率。 我们将确定MIMO-OFDM和MIMO-SC-FDMA在大规模MIMO系统的背景下的性能，并提出新的编码，天线选择和多用户检测技术，以提供非常高的频谱效率在bps/Hz。 我们将研究在SC-FDMA的频域中使用零点的新方法，以便携带与用于多址相反或除了用于多址之外的附加信息，以实现提高移动的上行链路的功率和频谱效率的目标。 我们还将研究更节能的信道脉冲响应估计技术，以减少所需的开销，进一步提高未来无线系统的频谱效率。 **

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. **