随着NRZ编码器白空间的开放，高效利用零碎频谱尤其是电视白空间成为一个极其重要的研究热点。除了有效使用频谱外，还需要特别注意保持较低的带外辐射，以避免对电视信号和无线话筒等现有服务造成有害干扰。因此，采用多载波调制方案的灵活数字无线电是唯一的解决方案。在本文中，我们展示了两个创新的多载波系统，滤波器组多载波（FBMC）和广义频分复用（GFDM）的性能。为了提高GFDM系统的性能，采用了一种简单的干扰消除技术&串行载波间干扰消除方案。在FBMC中实现了信道均衡技术。
NRZ Encoder With the opening up of white spaces, efficient use of the fragmented spectrum – TV white space in particular – has become an extremely important focus of research. Apart from efficient spectrum usage, special care needs to be taken to maintain low out-of-band radiation to avoid harmful interference to incumbent services like TV signals and wireless microphones. For this reason, a flexible digital radio with multicarrier modulation scheme is the only solution. In this paper, we show the performance of two innovative multicarrier systems, Filter Bank Multi Carrier (FBMC) and Generalized Frequency Division Multiplexing (GFDM). A simple interference cancellation technique called serial inter-carrier interference cancellation scheme has been used to improve performance of the GFDM system. Channel equalization techniques have been implemented for FBMC.
资源文件列表
BPSK_modulation.m , 5082
File1_NRZ_Encoder.m , 1623
File2_BPSK_Mod_Demod.m , 3879
NRZ_Encoder.m , 1670
Simulated and Theoretical PDF.fig , 25360