Bandwidth requirements

PCM consists of three steps to digitize an analog signal: 1.Sampling 2.Quantization 3.Binary encoding Before we sample, we have to filter the signal to limit the maximum frequency of the signal as it affects the sampling rate. Filtering should ensure that we do not distort the signal, ie remove high frequency components that affect the signal shape.

75p vanmanh1008 24-06-2013 49 4   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: On-board Data Processing to Lower Bandwidth Requirements on an Infrared Astronomy Satellite: Case of Herschel-PACS Camera

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The Nyquist theoretical minimum bandwidth requirement. The ShannonHartley capacity theorem (and the Shannon limit) Government regulations. Technological limitations. Other system requirements (e.g satellite orbits)

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All point-to-point communication networks have a means of directing traffic from a source to a destination via intermediate nodes. This routing function must be performed efficiently as it affects all aspects of network communications including jitter, latency and total bandwidth requirement. Other issues related to routing, such as policing and traffic control are not dealt with in this chapter. There are two distinct approaches to ‘routing’ traffic, namely connection-oriented and connectionless. ...

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The telecommunications access network is the section of the network that connects the local exchange to the customers. At present most of the access network is composed of low bandwidth copper cable. Electronic communications are becoming an essential feature of life both at home and at work. The increasing use of applications that require larger bandwidths (such as the internet and video on demand) are making the copper infrastructure inadequate. These demands could be met using optical fibre technologies....

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Segment Design Tradeoffs I. OVERVIEW The six steps in the systems-level design process associated with the software radio are illustrated in Figure 6-1. The tradeoffs proceed from front end to back end. The choice of antennas (step 1 in the figure) determines the number and bandwidth of RF channels (step 2). This, in turn, constrains the numbers and bandwidths of ADCs (step 3). Some waveforms may require dedicated ASICs (e.g., W-CDMA despreaders) in front of the ADCs. Additional parallel IF processing and ADC paths may be necessary to support multiple-service bands simultaneously....

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Network Economy Measures People who plan telecommunications networks are always searching for equipment economy a network for a given information carrying capacity; or, measures: reducing cost the of conversely, increasing the information throughput of a fixed network resource. To achieve their aims, can they either maximize electrical the bandwidth available from a given physical transmission path,or (if it is the other kindof economy they want)they can reduce the amount of electrical bandwidth required to carry individual messages or connections. ...

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Act as an intermediary between hosts Cache data to reduce the time and external bandwidth required to service requests

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10Gigabit Ethernet is an emerging technology offering data speeds up to 10 billion bits per second. This latest standard has been driven not only by the increase in normal data traffic but also by the proliferation of new, bandwidth-intensive applications. At the recent IEEE 10Gigabit/s Ethernet standard working group meeting it was announced that international structured cabling company KRONE had made a breakthrough.

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