Method for detecting NR uplink control channel format 1

Abstract

The invention discloses a method for detecting an NR uplink control channel format 1, which comprises the following steps of: receiving data by a base station, extracting and splitting the data, and calculating a target signal by using a frequency domain local spread spectrum sequence and a time domain local spread spectrum sequence of an idle code channel to obtain an interference noise power measurement value, a channel estimation value and a data signal; splicing operation data of different antennas at different frequency hopping RB positions according to a given sequence R to obtain a corresponding data vector, a channel estimation vector and an interference noise matrix; inputting the data vector, the channel estimation vector and the interference noise matrix into a minimum mean square error equalizer to obtain equalized data; and mapping the balanced data to a standard constellation point according to a given decision rule, and demodulating the balanced data into an information bit according to a given bit-constellation point mapping criterion. According to the invention, different antenna signals at different frequency hopping RB positions are spliced and then sent to the MMSE equalizer at one time, so that the performance loss caused by large signal-to-noise ratio condition difference among multiple paths of signals can be effectively overcome.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a detection method for NR uplink control channel format 1. Background technique [0002] In the NR (new air interface, the fifth generation mobile communication technology) system, the base station uses multiple antennas and different RB (frequency domain resource block, 1RB contains 12 OFDM subcarriers) positions to receive the PUCCH (Physical Uplink Control Channel) format 1 signal. In a complex wireless propagation environment, the signal-to-noise ratio conditions of the above-mentioned multi-channel signals are quite different. In the existing technology, the multi-channel signals are directly averaged linearly, and there are obvious differences in the signal-to-noise ratio conditions of different RBs and different antennas. performance loss. [0003] Patent CN105873120A provides a scheme for screening different antenna signals through the SNR threshold, which ca...

AI Technical Summary

Problems solved by technology

In a complex wireless propagation environment, the signal-to-noise ratio conditions of the above-mentioned multi-channel signals are quite different. In the existing technology, the multi-channel signals are directly averaged linearly, and there are obvious differences in the signal-to-noise ratio conditions of different RBs and different antennas. performance loss

[0003] Patent CN105873120A provides a scheme for screening different antenna signals through the SNR threshold, which can significantly improve the performance of distributed antenna scenarios, but loses too much usefulness in scenarios where the SNR conditions of different antennas are not much different. signal, with significant performance loss

Patent CN107453850A provides an interference scene enhancement scheme. First, measure the signal-to-noise ratio of different antenna signals, then calculate a weight coefficient between 0 and 1, and then perform weighted combination of different antenna signals, which can improve the system performance of the interference scene. However, this scheme does not consider the minimization of the final detection error, so there is still a significant performance loss

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