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    • 10. 发明申请
    • METHODS AND APPARATUS FOR FASTER THAN NYQUIST RATE MULTI-CARRIER MODULATION
    • 方法和装置比NYQUIS RATE MULTI-CARRIER调制更快
    • US20160191218A1
    • 2016-06-30
    • US14912337
    • 2014-08-15
    • INTERDIGITAL PATENT HOLDINGS INC.
    • Erdem BalaRui YangJialing Li
    • H04L5/00H04L27/26H04J11/00
    • H04L5/0007H04J11/0023H04L5/0044H04L5/0062H04L27/264H04L27/2644
    • The disclosure pertains to methods and apparatus for Faster than Nyquist (FTN) modulation schemes to increase throughput in multicarrier communication systems and wherein the latency problem inherent in filter bank multicarrier systems (FBMC) is reduced or eliminated by using non-orthogonal waveforms (i.e., faster than Nyquist modulation) in only part(s) of the subframe or packet and orthogonal waveforms in other part(s). The number and spacing between FTN pulses may be selected such that the last sample of the last pulse is received within the time slot allocated to the subframe/packet, thereby eliminating added latency. The FTN modulation scheme may be employed both temporally and in frequency (e.g., the frequency spacing of the channels may be tighter than the Nyquist frequency spacing condition. FTN signaling also may be used as a method to control/coordinate interference between different nodes. For instance, if a node uses FTN, more pulses may be packed into a given period in the time domain and/or more channels may be packed into a given bandwidth in the frequency domain, hence some parts of the band may be vacated for use by others, use by the same node for additional channels, or used with reduced power. The interference control/coordination may be extended to time and frequency. Such FTN schemes may be used with different types of multicarrier systems.
    • 本公开涉及用于提高多载波通信系统中的吞吐量的用于比奈奎斯特(FTN)调制方案更快的方法和装置,并且其中通过使用非正交波形来减少或消除滤波器组多载波系统(FBMC)中固有的等待时间问题(即, 比奈奎斯特调制更快)仅在子帧或分组的一部分中,其他部分的正交波形。 可以选择FTN脉冲之间的数量和间隔,使得在分配给子帧/分组的时隙内接收最后一个脉冲的最后一个样本,从而消除增加的等待时间。 FTN调制方案可以在时间上和频率上使用(例如,信道的频率间隔可以比奈奎斯特频率间隔条件更紧,FTN信令也可以用作控制/协调不同节点之间的干扰的方法。 例如,如果节点使用FTN,则可以在时域中将更多的脉冲打包到给定的时间段内,和/或可以将更多的信道压缩到频域中的给定带宽中,因此频带的某些部分可以腾出以供 其他的,由相同节点用于附加信道,或者以降低的功率使用,干扰控制/协调可以扩展到时间和频率,这样的FTN方案可以与不同类型的多载波系统一起使用。