enhancement of noise performance in digital receivers by over sampling the received signal
نویسندگان
چکیده
in wireless channel the noise has a zero mean. this channel property can be used in the enhancement of the noise performance in the digital receivers by oversampling the received signal and calculating the decision variable based on the time average of more than one sample of the received signal. the averaging process will reduce the effect of the noise in the decision variable that will approach to the desired signal value. the averaging process works like a lter that reduces the noise power at its output according to its averaging interval. although the power spectrum of the noise does not change according to the averaging process, the noise variance at the decision variable will be smaller than the channel noise variance. this paper studies this idea and show how the performance of digital receivers can be enhanced by oversampling the received signal. this paper shows another treatment method to the noise problem in digital modulation systems.
منابع مشابه
Enhancement of Noise Performance in Digital Receivers by Over Sampling the Received Signal
In wireless channel the noise has a zero mean. This channel property can be used in the enhancement of the noise performance in the digital receivers by oversampling the received signal and calculating the decision variable based on the time average of more than one sample of the received signal. The averaging process will reduce the effect of the noise in the decision variable that will approa...
متن کاملstudy of cohesive devices in the textbook of english for the students of apsychology by rastegarpour
this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...
Statistical analysis of the received signal over multipath fading channels via generalization of shot-noise
This paper is a continiiation of the companion paper [l], in which miiltipath fading channels (MFC) are formulated as generalizations of the shotnoise analysis in investigating the statistical properties of wireless channels and their responses to different signals. These include second-order statistics, generalizations of Campbell’s theorem and central-limit theorems [2 ] . An application of t...
متن کاملa study of the fifth child and ben in the world by doris lessing in the light of julia kristevas psychoanalytic concepts
این مطالعه به بررسی عوامل روانشناختی کریستوادردو رمان دوربس لسینگ،فرزندبنجم و بن دردنیای واقعی می بردازد.موفقیت یا شکست کاراکترهادر تکمیل شکست تتیزی یه کمک بدر وهم از مهم ترین دغدغه محقق می باشد.به بررسی تحلیل روانشناختی تمامی کاراکترها خصوصا بن برداخته و به دنبال نشانه هایی از جامعه شیشه ای کریستوا می باشد.
15 صفحه اولPerformance Enhancement on Digital Signal Processors with Complex Arithmetic Capability
Digital Signal Processors with complex arithmetic capability (DSP-C) are useful for various applications. In this paper, we propose a method for the effective implementation of specific circuits with real coefficients on DSP-C. DSPC has special hardware such as a complex multiplier so that a complex calculation can be performed with only one instruction. First, we show that nodes with two real ...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
international journal of industrial mathematicsجلد ۶، شماره ۴، صفحات ۲۷۵-۲۸۴
کلمات کلیدی
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023