منابع مشابه
Blind Estimation of Block Interleaver Parameters using Statistical Characteristics
In digital communications systems, interleavers are used to stir bits of channel coded data to robust against burst error in noisy channel. However, in non-cooperative context such as signal intelligence system(SIGINT) and spectrum surveillance systems, interleaver may act as encryptor to 3 party listener who has no information about the interleaver parameters used in transmitter. Therefore, bl...
متن کاملBlind Estimation of Encoder and Interleaver Characteristics in a Non Cooperative Context
In most digital transmission systems, the data stream is rst encoded, then sent to an interleaver that rearranges the encoded symbols in order to provide protection against error bursts. In this paper, we consider analysis of an interleaved stream in a non cooperative context (i.e. military or spectrum surveillance application). In this context, the encoder and the interleaver used by the tran...
متن کاملBlind Identification of Convolutional Encoder Parameters
This paper gives a solution to the blind parameter identification of a convolutional encoder. The problem can be addressed in the context of the noncooperative communications or adaptive coding and modulations (ACM) for cognitive radio networks. We consider an intelligent communication receiver which can blindly recognize the coding parameters of the received data stream. The only knowledge is ...
متن کاملinvestigation of effective parameters on the rigidity of light composite diaphragms (psscb) by fem
در این رساله با معرفی سقف های psscb متشکل از ترکیب ورق های فولادی ذوزنقه ای و تخته های سیمانی الیافی به عنوان سقف های پیش ساخته (سازگار با سیستم سازه ای قاب های فولادی سبک) به بررسی پارامترهای موثر بر صلبیت سقف، پرداخته می شود. در تحقیق حاضر ابتدا به مدل سازی دو نمونه سقف آزمایش شده، به روش اجزاء محدود با استفاده از نرم افزار تحلیلی abaqus ver 6.10 پرداخته شده است. نمونه های ساخته شده تحت اعما...
Blind Detection, Parameters Estimation and Despreading of DS-CDMA Signals in Multirate Multiuser Cognitive Radio Systems
The design of smart terminals able to detect reachable frequency bands and configure them according to the available channel state information is a major focus of current research. Two main approaches are addressed in the literature: cooperative scenario and blind methods whom transmission parameters are unknown. Blind spectrum sensing and parameters estimation (at the receiver side) may guaran...
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ژورنال
عنوان ژورنال: Signal Processing
سال: 2009
ISSN: 0165-1684
DOI: 10.1016/j.sigpro.2008.09.012