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OFDM-CPM for Wireless Communications. Design, Properties and Performance

Автор:   Imran T.
мягкая обложка
208 страниц
2009 год
Издательство:   Книга по Требованию
Цена:
3212 руб
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Описание:The proposed systems are also power efficient and we show that it is possible to design such OFDM-CPM systems that have low peak to average power ratio. This book presents a new class of OFDM signals that have the potential of mitigating most of the ill effects of the wireless channels. A number of optimum and suboptimum receivers are designed and their error performance is evaluated over multipath fading channels - both indoor and outdoor. The discussion of 4G wireless systems is incomplete without OFDM. We name this new class of signals as OFDM-CPM that uses the concept of correlated phase states to improve the bit error rate performance over conventional OFDM signals such as OFDM-PSK, -QAM, -DPSK etc. In short, OFDM-CPM is a strong candidate for future wireless and mobile communication systems. In OFDM-CPM signals, we systematically introduce correlation amongst adjacent symbols using a well defined mapping process. We show that all the OFDM-CPM systems out perform conventional OFDM systems by a substantial margin.


Orthomol Immun Junior Сила иммунитета на страже Вашего ребенка Orthomol Immun Junior Сила иммунитета на страже Вашего ребенка

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Programming Embedded Systems in C and C++

It is also common to find microcontroller versions of popular microprocessors. For example, Intel's 386EX is a microcontroller version of the very successful 80386 microprocessor. The final type of processor is a digital signal processor, or DSP. The CPU within a DSP is specially designed to perform discrete-time signal processing calculations — like those required for audio and video communications — extremely fast. Because DSPs can perform these types of calculations much faster than other processors, they offer a powerful, low-cost microprocessor alternative for designers of modems and other telecommunications and multimedia equipment. Two of the most common DSP families are the TMS320Cxx and 5600x series from TI and Motorola, respectively. 5.4.2 Intel's 80188EB Processor The processor on the arcom board is an intel 80188eb-a microcontroller version of the 80186. In addition to the CPU, the 80188EB contains an interrupt control unit, two programmable I/O ports, three timer/counters, two serial ports, a DRAM controller, and a chip-select unit ...»

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