Latency (engineering)

About: Latency (engineering) is a research topic. Over the lifetime, 3729 publications have been published within this topic receiving 39210 citations. The topic is also known as: lag.

Self-Clocked Rate Adaptation for Multimedia

Abstract: This memo describes a rate adaptation algorithm for conversational media services such as interactive video. The solution conforms to the packet conservation principle and uses a hybrid loss-and-delay- based congestion control algorithm. The algorithm is evaluated over both simulated Internet bottleneck scenarios as well as in a Long Term Evolution (LTE) system simulator and is shown to achieve both low latency and high video throughput in these scenarios.

System for the reliable, fast, low-latency communication of object state updates over a computer network by combining lossy and lossless communications

Abstract: A system for fast, efficient and reliable communication of object state irmation among a group of processes combines the use of a fast, but lossy and thus unreliable communications channel to the group of processes and a server coupled to the group for providing data which has been lost in the multicasting In one embodiment, a central server supports reliability and rapid joining while using UDP multicast messaging to achieve rapid interaction and low bandwidth Differential messages are sent over the lossy channel to compactly describe how to compute the new state of an object from any of several previous states Such a description can be interpreted even if some number of prior descriptions were not received, greatly reducing the need for explicit, round-trip message repairs while also conserving bandwidth In one embodiment, the central server communicates with each member of the group over a reliable channel to robustly detect and repair objects affected by lost messages

A low-latency, real-time-capable singing voice detection method with LSTM recurrent neural networks

Abstract: Singing voice detection aims at identifying the regions in a music recording where at least one person sings. This is a challenging problem that cannot be solved without analysing the temporal evolution of the signal. Current state-of-the-art methods combine timbral with temporal characteristics, by summarising various feature values over time, e.g. by computing their variance. This leads to more contextual information, but also to increased latency, which is problematic if our goal is on-line, real-time singing voice detection. To overcome this problem and reduce the necessity to include context in the features themselves, we introduce a method that uses Long Short-Term Memory Recurrent Neural Networks (LSTM-RNN). In experiments on several data sets, the resulting singing voice detector outperforms the state-of-the-art baselines in terms of accuracy, while at the same time drastically reducing latency and increasing the time resolution of the detector.

Experimental demonstration of high-throughput low-latency mobile fronthaul supporting 48 20-MHz LTE signals with 59-Gb/s CPRI-equivalent rate and 2-μs processing latency

Abstract: We experimentally demonstrate the transmission of 48 20-MHz LTE signals with a CPRI-equivalent data rate of 59 Gb/s, achieving a low round-trip digital-signal-processing latency of <2 μs and a low mean error-vector magnitude of ∼2.5 % after fiber transmission.

Distributed Loss-Compensation Techniques for Energy-Efficient Low-Latency On-Chip Communication

Abstract: In this paper, we describe the use of distributed loss compensation to provide nearly transmission-line behavior for long on-chip interconnects. Negative impedance converters (NICs) inserted at regular intervals along an on-chip line are shown to reduce losses from more than 1 dB/mm to less than 0.3 dB/mm at 10 GHz. Results are presented for a 14-mm 3-Gb/s on-chip double-data-rate (DDR) link in 0.18-mum CMOS technology, with a measured latency of 12.1 ps/mm and an energy consumption of less than 2 pJ/b with a BER<10-14. This constitutes a factor-of-three improvement in power and a one-and-a-half-times improvement in latency over an optimally repeated RC line of the same wire width