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A Two-Stage 2D Channel Extrapolation Scheme for TDD 5G NR Systems
A novel two-stage two-dimensional (2D) channel extrapolation scheme in both frequency and time domain is proposed, designed to mitigate the negative effects of imperfection factors and ensure high-accuracy channel estimation.
A Two-stage Multiband WiFi Sensing Scheme via Stochastic Particle-Based Variational Bayesian Inference
Multiband fusion enhances WiFi sensing by jointly utilizing signals from multiple non-contiguous frequency bands.
Fundamental Limits and Optimization of Multiband Sensing
Then, a metric called the statistical resolution limit (SRL) that provides a resolution limit is employed to investigate the fundamental limits of delay resolution.
Multiband Delay Estimation for Localization Using a Two-Stage Global Estimation Scheme
In the coarse stage, we exploit the group sparsity structure of the multiband channel and propose a Turbo Bayesian inference (Turbo-BI) algorithm to achieve a good initial delay estimation based on a coarse signal model, which is transformed from the original multiband signal model by absorbing the carrier frequency terms.
