116 citations · 142 across the 11 of their papers we have counts for
11 papers
In-Situ Calibration of Antenna Arrays for Positioning With 5G Networks
Mengguan Pan, Shengheng Liu, Peng Liu +5
Owing to the ubiquity of cellular communication signals, positioning with the fifth generation (5G) signal has emerged as a promising solution in global navigation satellite system…
Link-level simulator for 5G localization
Xinghua Jia, Peng Liu, Wangdong Qi +5
Channel-state-information-based localization in 5G networks has been a promising way to obtain highly accurate positions compared to previous communication networks. However, there…
Efficient Joint DOA and TOA Estimation for Indoor Positioning with 5G Picocell Base Stations
Mengguan Pan, Peng Liu, Shengheng Liu +5
The ubiquity, large bandwidth, and spatial diversity of the fifth generation (5G) cellular signal render it a promising candidate for accurate positioning in indoor environments wh…
Multipath Error Correction in Radio Interferometric Positioning Systems
Cheng Zhang, Wangdong Qi, Li Wei +2
The radio interferometric positioning system (RIPS) is an accurate node localization method featuring a novel phase-based ranging process. Multipath is the limiting error source fo…
On the Unambiguous Distance of Multi-Carrier Phase Ranging with Random Hopped Frequencie
Peng Liu, Wangdong Qi, Yue Zhang +1
In a multi-carrier phase ranging (MPR) system, the distance that radio signal travels is estimated through phase shift of multiple carrier frequencies. Due to phase ambiguity, a un…
Full Duplex Joint Sensing for Opportunistic Access in Spectrum-Heterogeneous Cognitive Radio Networks
Peng Liu, Wangdong Qi, Li Wei +2
In cognitive radio networks (CRN), secondary users (SUs) can share spectrum with licensed primary users (PUs). Because an SU receiver (SU-Rx) does not always share the same view of…
Closed-form, robust and accurate multi-frequency phase unwrapping: frequency design and algorithm
Li Wei, Wangdong Qi
A closed-form algorithm, named "concerto", is proposed for phase-based distance estimation in multi-frequency phase unwrapping (MFPU) system. The concerto method consists of three…
The Unambiguous Distance in a Phase-based Ranging System with Hopping Frequencies
Yue Zhang, Wangdong Qi, Su Zhang
It is a challenge to specify unambiguous distance (UD) in a phase-based ranging system with hopping frequencies (PRSHF). In this letter, we propose to characterize the UD in a PRSH…
Performance of ML Range Estimator in Radio Interferometric Positioning Systems
Yue Zhang, Wangdong Qi, Guangxia Li +1
The radio interferometric positioning system (RIPS) is a novel positioning solution used in wireless sensor networks. This letter explores the ranging accuracy of RIPS in two confi…
Optimal sequencing of a set of positive numbers with the variance of the sequence's partial sums maximized
Li Wei, Wangdong Qi, Dingxing Chen +2
We consider the problem of sequencing a set of positive numbers. We try to find the optimal sequence to maximize the variance of its partial sums. The optimal sequence is shown to…
Optimization in Multi-Frequency Interferometry Ranging: Theory and Experiment
Li Wei, Wangdong Qi
Multi-frequency interferometry (MFI) is well known as an accurate phase-based measurement scheme. The paper reveals the inherent relationship of the unambiguous measurement range (…