Search Results for author: Shicong Liu

Found 9 papers, 1 papers with code

Transformer-based Joint Source Channel Coding for Textual Semantic Communication

no code implementations23 Jul 2023 Shicong Liu, Zhen Gao, Gaojie Chen, Yu Su, Lu Peng

The Space-Air-Ground-Sea integrated network calls for more robust and secure transmission techniques against jamming.

Semantic Similarity Semantic Textual Similarity +1

Hybrid Knowledge-Data Driven Channel Semantic Acquisition and Beamforming for Cell-Free Massive MIMO

no code implementations6 Jul 2023 Zhen Gao, Shicong Liu, Yu Su, Zhongxiang Li, Dezhi Zheng

Moreover, based on the acquired channel semantic, we further propose a knowledge-driven deep-unfolding multi-user beamformer, which is capable of achieving good spectral efficiency with robustness to imperfect CSI in outdoor XR scenarios.

LEO Satellite Constellations for 5G and Beyond: How Will They Reshape Vertical Domains?

no code implementations18 Jun 2021 Shicong Liu, Zhen Gao, Yongpeng Wu, Derrick Wing Kwan Ng, Xiqi Gao, Kai-Kit Wong, Symeon Chatzinotas, Bjorn Ottersten

The rapid development of communication technologies in the past decades has provided immense vertical opportunities for individuals and enterprises.

Deep Denoising Neural Network Assisted Compressive Channel Estimation for mmWave Intelligent Reflecting Surfaces

2 code implementations3 Jun 2020 Shicong Liu, Zhen Gao, Jun Zhang, Marco Di Renzo, Mohamed-Slim Alouini

Integrating large intelligent reflecting surfaces (IRS) into millimeter-wave (mmWave) massive multi-input-multi-ouput (MIMO) has been a promising approach for improved coverage and throughput.

Compressive Sensing Denoising

Accurate Deep Representation Quantization with Gradient Snapping Layer for Similarity Search

no code implementations30 Oct 2016 Shicong Liu, Hongtao Lu

However, how to learn deep representations that strongly preserve similarities between data pairs and can be accurately quantized via vector quantization remains a challenging task.

Quantization

Accelerated Distance Computation with Encoding Tree for High Dimensional Data

no code implementations17 Sep 2015 Shicong Liu, Junru Shao, Hongtao Lu

We propose a novel distance to calculate distance between high dimensional vector pairs, utilizing vector quantization generated encodings.

Quantization Vocal Bursts Intensity Prediction

Improved Residual Vector Quantization for High-dimensional Approximate Nearest Neighbor Search

no code implementations17 Sep 2015 Shicong Liu, Hongtao Lu, Junru Shao

In this paper, we propose an improved residual vector quantization (IRVQ) method, our IRVQ learns codebook with a hybrid method of subspace clustering and warm-started k-means on each stage to prevent performance gain from dropping, and uses a multi-path encoding scheme to encode a vector with lower distortion.

Clustering Quantization +1

HCLAE: High Capacity Locally Aggregating Encodings for Approximate Nearest Neighbor Search

no code implementations17 Sep 2015 Shicong Liu, Junru Shao, Hongtao Lu

Further, we propose Aggregating-Tree (A-Tree), a non-exhaustive search method using HCLAE to perform efficient ANN-Search.

Quantization Vocal Bursts Intensity Prediction

Learning Better Encoding for Approximate Nearest Neighbor Search with Dictionary Annealing

no code implementations6 Jul 2015 Shicong Liu, Hongtao Lu

Jointly used with residual vector quantization, our optimized dictionaries lead to a better approximate nearest neighbor search performance compared to the state-of-the-art methods.

Dictionary Learning Quantization

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