CAJ | 학술논문

针对当前OFDM系统中的比特分配算法复杂度比较高，不适合运用于自适应调制系统中，提出改进的自适应比特分配调整算法，采用变步长调整的思想，进一步简化比特分配的复杂度。在此基础上，将OFDM和MIMO技术结合，进行MIMO-OFDM系统的相关参数仿真并进行分析。通过仿真说明本文介绍的算法计算复杂度小，成本较低，适用多用户，能够很好的应用到实际中。
침대당전OFDM계통중적비특분배산법복잡도비교고，불괄합운용우자괄응조제계통중，제출개진적자괄응비특분배조정산법，채용변보장조정적사상，진일보간화비특분배적복잡도。재차기출상，장OFDM화MIMO기술결합，진행MIMO-OFDM계통적상관삼수방진병진행분석。통과방진설명본문개소적산법계산복잡도소，성본교저，괄용다용호，능구흔호적응용도실제중。
The Orthogonal Frequency Division Multiplexing （OFDM Division Multiplexing） Orthogonal, some is the most popular attention after the 3G mobile communication technology. It will be the high-speed data flow decompose into N lowspeed flow of data, and improve the utilization rate of spectrum greatly improve the performance of wireless communication system. The paper introduces the adaptive technology OFDM current research and application, the system is discussed in detail the OFDM structure and adaptive technology combining AOFDM after the structure and properties of the system. On this basis, combining with the current research hotter MIMO OFDM muhiple-nput multiple-output （MIMO） and technology, technology, simply introduces adaptive mimo-ofdm system of knowledge for mimo-ofdm related parameters of the system simulation and analysis. Some algorithms that is introduced in this paper in computational complexity is small, low cost. It can be very good to practice.