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Title Details:
Optimal Digital Detection – Matched Filters
Authors: Mitrou, Nikolaos
Reviewer: Karampogias, Serafeim
Subject: ENGINEERING AND TECHNOLOGY > > >
Description:
Abstract:
This chapter presents the method of optimal identification of pulses, which carry digital data and have been corrupted during transmission with additive, white noise. The method is implemented with the so-called matched filter, which is basically a signal correlator. At the receiver, a bank of matched filters (corresponding to the different, linearly independent pulses of the agreed transmission repertoire – referred to as signal constellation) calculate the correlation of their pulse with each incoming pulse (multiplication and integration over the fundamental period, T). The filter with the largest output value indicates the pulse with the highest likelihood (ie, the highest probability of having been emitted, under the condition of the signal received). After presenting the basic features of matched filters, a generalization to N-dimensional linear signal spaces is made. Error analysis is briefly discussed and worked examples of sinusoidal pulse (FSK) and pulse amplitude modulated (PAM or ASK) recognition are given.
Linguistic Editors: Konachos, Dimitrios
Technical Editors: Stavrou, Periklis
Tsionis, Elias
Type: Chapter
Creation Date: 2015
Item Details:
License: Attribution - NonCommercial - ShareAlike 4.0 International (CC BY-NC-SA 4.0)
Handle http://hdl.handle.net/11419/6047
Bibliographic Reference: Mitrou, N. (2015). Optimal Digital Detection – Matched Filters [Chapter]. In Mitrou, N. 2015. Digital Communications [Undergraduate textbook]. Kallipos, Open Academic Editions. https://hdl.handle.net/11419/6047
Language: Greek
English
Is Part of: Digital Communications
Publication Origin: Kallipos, Open Academic Editions