Correlated receiver and signal receiving method for super-broad band radio communication system

Abstract

This invention relates to a coherent receiver and a signal receiving method used in a super-broadband-radio communication system utilizing the ML calculation algorithm to reform local sample signals, so that it can match with the received singles even better. It is tested that the local sample signal got from ML calculation should be the mean value to the received signals in Causs white noise channel, which reduces the error code rate of the received signals effectively, solves the diffusion problem of differential coherent receivers and saves the calculation circuit necessary for RAKE receiving.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a related receiver and a signal receiving method for an ultra-wideband wireless communication system. Background technique [0002] UWB (Ultra Wide Band) technology was developed as a military radar technology in 1960. It occupies a bandwidth from a few Hz to a few GHz. It transmits a very short (ns level) pulse signal and receives and analyzes the reflected pulse. position to provide a positioning accuracy of a few centimeters. [0003] UWB wireless technology has been used in military radar tracking and precise positioning for a long time. But since the early 1990s, due to the emergence of wireless access rate bottlenecks, people began to seek new broadband access technologies. Existing wireless technologies such as 802.11b (Wi-Fi) and Bluetooth can already achieve most of the functions that UWB wants to achieve, but the speed is far from meeting the requirements. UWB...

AI Technical Summary

Problems solved by technology

[0011] 1. Since the local sample function cannot match the received signal well, energy loss is caused, which in turn leads to a high bit error rate;

[0012] 2. Before receiving RAKE, it is necessary to determine the position and amplitude of each path after matching correlation to adjust τ m and CL n , so in order to cooperate with RAKE reception, there must be an estimation circuit, which increases the complexity of the UWBRAKE receiver circui

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