A method, device and system for sending physical layer signals

Abstract

Embodiments of the present invention disclose a method, an apparatus and a system for sending a physical layer signal, where the method for sending a physical layer signal includes: constructing a signal frame of a physical layer signal, where the signal frame includes one single-frequency sequence, the single-frequency sequence is used to enable a receiving apparatus to capture the signal frame in a frequency domain according to the single-frequency sequence, and the single-frequency sequence includes a plurality of single-frequency preset symbols; and sending the physical layer signal based on the signal frame. Applying the present invention can facilitate capturing the signal frame in a frequency domain by a receive end, and therefore, not only impact caused by frequency offset is overcome, but also multipath energy may be used effectively to improve performance of capturing.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, device and system for sending physical layer signals. Background technique [0002] 60GHz millimeter wave communication is an emerging short-distance high-speed wireless communication technology defined in the 60GHz frequency band. Since countries around the world have license-free spectrum up to several GHz near the 60GHz frequency band, 60GHz millimeter wave technology has huge communication capacity. Using 60GHz millimeter wave technology to define WPAN (wireless personal area network, wireless personal area network), can easily realize high-speed interconnection between mobile devices and wireless display of mobile devices on large-size TVs, monitors, and projectors; in addition, it can also Realize ultra-high-speed download and synchronization in hot spots, and provide Gbps (billions of bits per second, indicating the level of network exchange loan capability) In...

AI Technical Summary

Problems solved by technology

Although there are some solutions based on blind estimation for nonlinear effects and IQ imbalances generated by the power amplification process, for 60GHz systems, the complexity of the receiver is too high and there is a lack of realizability

In addition, frame capture based on Ga128 cannot use multipath energy to improve the robustness of capture, and because of the large carrier frequency offset of the 60GHz system, it can only be captured by differential coherent method, and the correlation detector has better performance in ideal channels. detection performance

However, under the influence of channel multipath, the performance of the detector will degrade significantly

In addition, although the method of complex correlation can resist carrier phase deviation, under the influence of large frequency deviation, the phase of rotation is different, which will greatly affect the correlation value and affect the capture performance.

Images