- Bạn vui lòng tham khảo Thỏa Thuận Sử Dụng của Thư Viện Số
Tài liệu Thư viện số
Danh mục TaiLieu.VN
In order to be able to study this book, basic knowledge of probability theory and system theory is required, with which students at masters level are in general familiar. In order to simplify comprehension, the fundamental mathematical tools, which are relevant for the objectives of this book, are recapitulated at the beginning. Starting from this basic knowledge, nearly all statements made in this book are derived in detail, so that a high...
430 p dtu 09/11/2012 215 1
Từ khóa: Mobile fading channels, electrical engineering, radio communications, kỹ thuật điện, probability theory, công nghệ viễn thông, kỹ thuật viễn thông
Distortion in RF power amplifiers
This book is about nonlinear distortion in radio frequency (RF) power amplifiers (PAs). The purpose of the PA is to boost the radio signal to a sufficient power level for transmission through the air interface from the transmitter to the receiver. This may sound simple, but it involves solving several contradicting requirements, the most important of which are linearity and efficiency. Unfortunately, these requirements tend to be mutually...
270 p dtu 07/11/2012 197 2
Từ khóa: Distortion in RF power amplifiers, radio frequency, radio channel, modulation techniques, khuếch đại công suất, tần số radio
The cognitive radio paradigm is based on the ability of sensing the radio environment in order to make informed decisions. This paper describes the effects of sensing on the cognitive radio channels capacity region. Sensing is modeled as a compression channel, which results in partial knowledge of the primary messages at the cognitive transmitter. This model enables to impose constraints on the sensing strategy. First, the dirty paper channel...
52 p dtu 16/05/2012 164 3
Từ khóa: Theory, radio channels, cognitive radio paradigm, radio environment, Sensing, channel encoder,