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The paper introduced a kind of intrinsic safety multifunction data processing terminal used in underground based on microprocessor chip S3C6410. It can record the underground multifunction data under the environment of whole dark (0Lux) through night-vision device, headphone, microphone etc, and achieve the multifunction frequency data's wireless transmission and wire transmission through WiFi (Wireless...
Transmitting real-time multimedia data has been a big challenge for wireless communications. The QoS experienced by the multimedia traffic is subject to the time-variant characteristics of the wireless channels. In this paper, a cross-layer algorithm is proposed to combat the wireless channel variation by adjusting the multimedia codec settings according to the MAC frame error rate in real-time. The...
This contribution addresses the case when live packet-switched video is used to enrich circuit-switched speech calls in mobile telephony. Circuit-switched and packet-switched transmissions generally operate on completely different transmission paths resulting in different QoS in terms of delay and loss rates. In this case, video and audio data recorded at the same time are not multiplexed together...
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