Áp dụng DSP lập trình trong truyền thông di động P16 doc

... research problems associated with distributed microsensors that require very different solutions than traditional macrosensors and multimedia devices. Energy dissipation, scal- ability, and latency ... for different instructions. It is natural that for different instructions the processor will dissipate different amounts of energy. Figure 16.4 shows the average current drawn from the StrongAR...

Ngày tải lên: 01/07/2014, 17:20

... consequence, with unpredictable time of answer (distributed platform: e.g. connected wireless). In addition, the use of status events allows the application to react immediately to unexpected ... possible to down- load on the DBB data such as media files (video, audio – for example ringing melodies). The DBB will then handle some multimedia tasks, so it will have limited e-content applications...

Ngày tải lên: 01/07/2014, 17:20

... Programmable DSPs in Mobile Communications248 The Application of Programmable DSPs in Mobile Communications236 Figure 13.8 Sensor block diagram (2) an independent processor can be dedicated to ... images and compare this information across different finger presentations. Different algorithms have different capabilities and accuracies and require different amounts of computational horsepower .....

Ngày tải lên: 01/07/2014, 17:20

... focusing on signal processing DSP designers have put programmable DSPs at the heart of many consumer devices, including mobile communica- tion systems. Recently DSPs have been specialized to ... past and in the future. We highlight different perspectives, especially regarding implementation issues, in the processing of speech, audio, video, future multimedia and location-based services as ....

Ngày tải lên: 01/07/2014, 17:20

... power consumption of the DSP. In addition, parallelism can be used to increase the number of The Application of Programmable DSPs in Mobile Communications18 Figure 2.5 Power dissipation trends in DSP 1976, ... http://www.lucent.com/micro/wireless.html [8] http://dspvillage.ti.com/docs/dspproducthome.jhtml [9] http://www.analog.com/industry /dsp/ [10] http://www.starcore -dsp. com/ [11] Au...

Ngày tải lên: 01/07/2014, 17:20

... to the DSP through a standardized interface. Therefore TCCs benefit from the DSP addressing capability, DSP address/data bus bandwidth, internal registers and common DSP memory space. Additionally ... Channel CDMA Code Division Multiple Access DBB Digital Base Band DLL Delay Locked Loop DSP Digital Signal Processor ETSI European Telecommunications Standards Institute FDD Frequency Di...

Ngày tải lên: 01/07/2014, 17:20

... they are closely related. The most DSP intensive functions are the two types of channel decoding: convolutional decoding and turbo decoding. Convolutional encoding is used for low data rate frames ... with a DSP was also achieved by memory mapping the device, by allowing block data transfers for input and/or output to be simultaneous with decoding, and by providing various signal lines fo...

Ngày tải lên: 01/07/2014, 17:20

... Application of Programmable DSPs in Mobile Communications78 direct path (path 0) so that t k is the differential multipath delay between the reflected path and the direct path. (This forces t 0 ¼ ... and flexibility to make hosting them in ASICs difficult. They are ideal however for a sufficiently powerful DSP. With the growing popularity and flexibility of software radios, DSPs will continue to...

Ngày tải lên: 01/07/2014, 17:20

... the digital domain. 6.3 Digitizing Today’s Analog Operations Digitizing operations currently performed in analog requires moving the Analog to Digital Converter (ADC) ever closer to the radio’s ... transceivers for different modes (RF bands). This ‘‘ velcro radio’’ leads to problems with handset size and cost. On the other hand, digital-based multimode compo- nents face the challenge of provi...

Ngày tải lên: 01/07/2014, 17:20

... real-time DSP in an application, the implemen- tation of a DSP solution involves the use of many ingredients: analog to digital converters, digital to analog converters, ASIC, memories, DSPs, microcontrollers, ... therefore centered more on ‘‘ disguising a RISC processor as a DSP ’ or using small DSP coprocessors. In the case of the latter, the excess burden of the DSP Enabling Multi...

Ngày tải lên: 01/07/2014, 17:20