Noncoherent Detection of FSK Signals Transmitted over Linearly Time-Selective Rayleigh Fading Channels
نویسندگان
چکیده
Linearly time-varying fading models are used to investigate noncoherent detection of frequency-shift keying (FSK) signals transmitted over frequency-flat fading channels. The structure of the optimal noncoherent FSK detector is derived and a novel analytical technique is proposed to compute the error performance of noncoherent FSK detectors in fast fading. Error performance results obtained by computer simulation are in excellent agreement with the analytical predictions.
منابع مشابه
Energy Detection of Unknown Signals over Composite multipath/shadowing Fading Channels
In this paper, the performance analysis of an energy detector is exploited over composite multipath/shadowing fading channels, which is modeled by Rayleigh-lognormal (RL) distribution. Based on an approximate channel model which was recently proposed by the author, the RL envelope probability density function (pdf) is approximated by a finite sum of weighted Rayleigh pdfs. Relying on this inter...
متن کاملCommunication for wideband fading channels: on theory and practice
This dissertation investigates some information theoretic aspects of communication over wideband fading channels and their applicability to design of signaling schemes approaching the wideband capacity limit. This work thus leads to enhanced understanding of wideband fading channel communication, and to the proposal of novel efficient signaling schemes, which perform very close to the optimal l...
متن کاملOptimum selection combining of binary NCFSK signals on independent Rayleigh fading channels
In this paper, we derive a new selection combining (SC) scheme for noncoherent binary FSK signals on independent (but not necessarily identically distributed) Rayleigh fading channels with -antenna diversity reception. With this combining scheme, we choose the diversity branch having the largest magnitude of the logarithm of the ratio of the a posteriori probabilities (log-APP ratio – LAPPR) of...
متن کاملInitial synchronization of W-CDMA systems using a power-scaled detector with antenna diversity in frequency-selective Rayleigh fading channels
An analytical evaluation of the performance in terms of detection probability and mean detection time of a noncoherent detector at the base station is presented for a wideband CDMA system, where the mobile terminal transmits a pilot signal in the form of bursts of modulated chips, which are transmitted periodically and separated by long silent intervals. The performance analysis is carried out ...
متن کاملStatistic Characteristics of M-ary Fsk Signal in the Presence of Gaussian Noise, Impulse Noise and Variable Signal Amplitude
In this paper we consider a system for coherent demodulation of M-ary FSK signals in the presence of Gaussian noise, impulse noise and variable signal amplitude. These annoyances can seriously degrade the performance of communication systems [1]-[3]. In the paper [4], the performance evaluation of several types of FSK and CPFSK receivers was investigated in detail using the modified moment’s me...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- IEEE Trans. Communications
دوره 45 شماره
صفحات -
تاریخ انتشار 1997