Quasi-Optimal Receiver with Non-Coherent Discriminators for Rescuer Radar

Operating quality of automated video control systems depends on optical specifications of video camera and peculiar features of video algorithm. Specified target function performance probability can serve as criterion of automated video control use efficiency. In this work, a new performance efficiency estimation method for automated equipment of target environment video control is suggested: to estimate the probability of target functions’ (object detection, capture, and auto tracking) performance. Theoretical prediction of target functions performance probability was built upon Johnson’s criterion and the use of optimal receiver model. The results of suggested method’s experimental verification have shown that target detection occurred when signal/noise ratio level was above 6. This level can be regarded as low value to ensure that object is detected with probability 0.9.

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Performances of the digital optical systems with optimal receiver

Trans Black Sea Region Symposium on Applied Electromagnetism ◽

10.1109/aem.1996.873198 ◽

2005 ◽

Author(s):

M.C. Stefanovic ◽

N.A. Trivunac ◽

D.Lj. Draca

Keyword(s):

Optical Systems ◽

Optimal Receiver

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BER Performance Analysis of Non-Coherent Q-Ary Pulse Position Modulation Receivers on AWGN Channel

Sensors ◽

10.3390/s21186102 ◽

2021 ◽

Vol 21 (18) ◽

pp. 6102

Author(s):

Xianhua Shi ◽

Yimao Sun ◽

Jie Tian ◽

Maolin Chen ◽

Youjiang Liu ◽

...

Keyword(s):

Gaussian Noise ◽

Additive White Gaussian Noise ◽

Theoretical Formula ◽

Pulse Position Modulation ◽

Error Performance ◽

Optimal Receiver ◽

Awgn Channel ◽

Simulation Results ◽

The Relationship ◽

Better Than

This paper introduces the structure of a Q-ary pulse position modulation (PPM) signal and presents a noncoherent suboptimal receiver and a noncoherent optimal receiver. Aiming at addressing the lack of an accurate theoretical formula of the bit error rate (BER) of a Q-ary PPM receiver in the additive white Gaussian noise (AWGN) channel in the existing literature, the theoretical formulas of the BER of a noncoherent suboptimal receiver and noncoherent optimal receiver are derived, respectively. The simulation results verify the correctness of the theoretical formulas. The theoretical formulas can be applied to a Q-ary PPM system including binary PPM. In addition, the analysis shows that the larger the Q, the better the error performance of the receiver and that the error performance of the optimal receiver is about 2 dB better than that of the suboptimal receiver. The relationship between the threshold coefficient of the suboptimal receiver and the error performance is also given.

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A Constellation Space Dimensionality Reduced Sub-Optimal Receiver for Orthogonal STBC CPM Modulation in a MIMO Channel

Acta Polytechnica ◽

10.14311/1107 ◽

2009 ◽

Vol 49 (2) ◽

Author(s):

M. Hekrdla

Keyword(s):

Rayleigh Fading ◽

Dimensional Subspace ◽

Space Time ◽

Mimo Channel ◽

Optimal Receiver ◽

Computational Performance ◽

Awgn Channel ◽

Serially Concatenated ◽

Optimal Subspace ◽

Subspace Search

We consider burst orthogonal space-time block coded (OSTBC) CPM modulation in a MIMO flat slow Rayleigh fading channel. The optimal receiver must process a multidimensional non-linear CPM signal on each antenna. This task imposes a high load on the receiver computational performance and increases its complexity. We analytically derive a suboptimal receiver with a reduced number of front end matched filters (MFs) corresponding to the CPM dimension. Our derivation is made fully in the constellation signal space, and the reduction is based on the linear orthogonal projection to the optimal subspace. Criterion optimality is a standard space-time rank and determinant criterion. The optimal arbitrary-dimensional subspace search leads to the eigenvector solution. We present the condition on a sufficient subspace dimension and interpret the meaning of the corresponding eigenvalues. It is shown that the determinant and rank criterion for OSTBC CPM is equivalent to the uncoded CPM Euclidean distance criterion. Hence the proposed receiver may be practical for uncoded CPM and foremost in a serially concatenated (SC) CPM system. All the derivations are supported by suitable error simulations for binary 2REC h= 1/2, but the procedure is generally valid for any CPM variant. We consider OSTBC CPM in a Rayleigh fading AWGN channel and SC CPM in an AWGN channel.

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