Single-carrier and ultra-wideband sending method and device

Abstract

The invention discloses single-carrier and ultra-wideband sending method and device. A physical layer data frame structure used in the method is characterized in that a leader sequence comprises a trapping / channel estimation sequence, a frame start delimiter and a block length; a training sequence field is used for coefficient training of a self-adapting filter; the frame head comprises a physical frame head and an MAC frame head; a data field bears metadata; after scrambled, encoded and interlaced, bits of the frame heads and the data are named as information bits; the information bits are divided into N blocks; the value of each frame N can be different, and then the frames of different lengths can be transmitted. A tracking sequence is inserted into the front of each block or behind each block to perform timing tracking. The invention enhances the dissociative diffusion signal-to-noise ratio so that the trapping probability is enhanced; the channel estimation accuracy is increased,the receiving and converting time is shortened, and thus the invention can meet high-speed requirement and is convenient for processing by blocks; and the data auxiliary timing tracking function can be performed.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a single-carrier ultra-wideband transmission method and device. Background technique [0002] UWB technology is a communication technology with an absolute bandwidth greater than 500MHz or a relative bandwidth greater than 20%, and it can provide a communication rate above 100Mbps. UWB has attracted wide attention in the industry for its excellent characteristics of high capacity and low power consumption. In various short-distance wireless networks, such as WPAN (Wireless Personal Area Network, wireless personal area network), WBAN (Wireless Body Area Network, wireless body area network), Ad-hoc network, ultra-wideband technology will be widely used . In addition, the UWB technology is also used in home multimedia interconnection, such as wireless HD (high definition) and WHDI (Wireless Home Digital Interface, wireless home digital interface). In additi...

AI Technical Summary

Problems solved by technology

Such a high-speed ADC will make the receiver very expensive, and the power consumption will be very significant, which cannot well meet the needs of low cost and low power consumption

As MB-OFDM adopts OFDM modulation, the inherent PAR (Peak to Average Ratio, peak-to-average ratio) disadvantage will make the RF module face greater pressure

In addition, OFDM technology requires high precision of ADC and is sensitive to carrier frequency offset.

It is also these defects that cause DS-UWB and MB-OFDM to not be widely used

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