An analogue modulation-type independent feed-forward carrier recovery approach for broadband wireless communication systems is introduced in this work. The focus is on the deliberately increased local oscillator (LO) signal feed-through to the radio frequency (RF) port of the up-converter in a direct conversion transmitter (TX). The strong LO feed-through is used at the receiver (RX) side to demodulate the RF signal. The heart of the carrier recovery block is a narrowband bandpass filter (BPF) and a frequency divider-by- n operated in injection-locking mode to the strong LO feed-through. The proposed method is investigated through circuit level simulations; while its feasibility is examined via the successful demodulation of complex data with various modulation types up to 8 Gbps for an E-band front-end. This method can be used for transceivers working at high carrier frequencies as far as the realisation of frequency divider circuits and narrowband BPFs is technically feasible.

中文翻译：

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毫米波宽带无线链路的模拟前馈载波恢复

在这项工作中，介绍了一种适用于宽带无线通信系统的模拟调制型独立前馈载波恢复方法。重点是故意将增加的本地振荡器（LO）信号直通到直接转换发送器（TX）中上变频器的射频（RF）端口。强大的LO馈通用于接收器（RX）一侧，以解调RF信号。载波恢复块的心脏是一个窄带带通滤波器（BPF）和分频器逐 Ñ在注入锁定模式下运行，以实现强大的LO馈通。通过电路级仿真研究了该方法。同时通过对E波段前端采用高达8 Gbps的各种调制类型的复杂数据的成功解调来检验其可行性。只要分频器电路和窄带BPF的实现在技术上可行，该方法就可用于工作在高载波频率的收发器。