منابع مشابه
Cross-layer wireless bit rate adaptation Citation
This paper presents SoftRate, a wireless bit rate adaptation protocol that is responsive to rapidly varying channel conditions. Unlike previous work that uses either frame receptions or signal-to-noise ratio (SNR) estimates to select bit rates, SoftRate uses confidence information calculated by the physical layer and exported to higher layers via the SoftPHY interface to estimate the prevailing...
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This thesis presents a hardware implementation of the SoftRate bit-rate adaptation protocol. SoftRate is a new bit-rate adaptation protocol, which uses per-bit confidence hints generated by the convolutional decoder to estimate the channel bit-error rate. Implementing SoftRate requires changes to both the physical and media access control layers. which precludes using existing commodity 802.11 ...
متن کاملLecture 16: Wireless bit-rate adaptation
This lecture, we’ll continue with the physical layer, but applied to wireless networks instead of wired networks. In particular, we’ll talk about one problem that occurs in the wireless physical layer: wireless bit-rate adaptation. We’ll start by defining bit-rate adaptation. Then we’ll talk about bit-rate adaptation in an idealized model of the wireless environment. We’ll then discuss bit-rate...
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Title of dissertation: LINK ADAPTATION IN WIRELESS NETWORKS: A CROSS-LAYER APPROACH Nazif Cihan Taş Doctor of Philosophy, 2010 Dissertation directed by: Professor Ashok Agrawala Department of Computer Science Conventional Link Adaptation Techniques in wireless networks aim to overcome harsh link conditions caused by physical environmental properties, by adaptively regulating modulation, coding ...
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Adaptive scheduling is becoming an increasingly important issue in wireless video communications, which are widely used in the industry and academic organizations. However, existing scheduling schemes for real-time video services in wireless networks generally do not take into account the relationship between the transmission delay and video distortion. In this paper, we develop and evaluate a ...
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ژورنال
عنوان ژورنال: ACM SIGCOMM Computer Communication Review
سال: 2009
ISSN: 0146-4833
DOI: 10.1145/1594977.1592571