Contextual Wireless Video Semantic Communication in MIMO-OFDM Systems
It addresses the challenge of robust video transmission in MIMO-OFDM systems for wireless communication, offering a novel approach to integrate context and channel awareness.
The paper proposes M-CVST, a MIMO-OFDM-based framework for robust video semantic communication over multi-path channels, achieving superior performance over existing semantic and traditional schemes.
This paper proposes a MIMO-OFDM-based context video semantic transmission framework, namely M-CVST, for robust video communication over multi-path multiple-input multiple-output (MIMO) channels. It introduces a context-subcarrier correlation map that aligns video feature context with groups of MIMO subcarriers. To leverage the time-correlated nature of multi-path channels, a recursive subcarrier sampling method paired with time-correlated reference embedding is designed, enabling the use of previously sampled MIMO subcarrier CSI to enhance channel state awareness in the entropy coding model. Numerical results verify the superiority of proposed M-CVST over MIMO multi-path channels compared to other semantic schemes and traditional separated schemes.