Zobrazeno 1 - 10
of 59
pro vyhledávání: '"R.A. Axford"'
Publikováno v:
IEEE Transactions on Signal Processing. 46:519-523
The constant modulus algorithm (CMA) can misconverge when the received two-dimensional (2-D) signal is derived from encoding a binary PN sequence. The distortion of the probabilistic symmetry of the transmitted constellation can be controlled by care
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9022d44526f33cf44c20347338105f04
https://doi.org/10.1109/78.655438
https://doi.org/10.1109/78.655438
Autor:
R.A. Axford
To incorporate symmetry properties of second-order differential equations into finite difference equations, the concept of differential-difference invariants is introduced. This concept is applied to discretizing homogeneous eigenvalue problems and i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d39a7531ad3d045808fef0a10cf076f7
https://doi.org/10.2172/883452
https://doi.org/10.2172/883452
Publikováno v:
IEEE International Symposium on Phased Array Systems and Technology, 2003..
It is well known how to build arrays. Phased arrays have not been cost-effective for most applications. An important consideration is how phase array become affordable. Extensive system trade studies are critical to ensuring the "best investment stra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3bcce637113a066214e23198378b531c
https://doi.org/10.1109/past.2003.1257009
https://doi.org/10.1109/past.2003.1257009
Autor:
R.A. Axford
Publikováno v:
Proceedings of MILCOM '93 - IEEE Military Communications Conference.
The author present an evaluation of the performance of the lattice constant modulus algorithm (LCMA) in blind channel equalization. The convergence performance of LCMA is compared to that of its transversal counterpart in equalizing the distortion of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::617615bf8a9d055b791c8febd91aa38d
https://doi.org/10.1109/milcom.1993.408508
https://doi.org/10.1109/milcom.1993.408508
Publikováno v:
Proceedings of MILCOM '96 IEEE Military Communications Conference.
This paper describes a framework for predicting the error rate performance of linearly modulated coherent systems operating over frequency selective, slowly fading channels, when the statistics of the bandlimited two-sided discrete FIR model for the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27df1590e2d4e66b596c4798a5e23856
https://doi.org/10.1109/milcom.1996.569419
https://doi.org/10.1109/milcom.1996.569419
Publikováno v:
Proceedings of MILCOM '94.
This paper presents an investigation of the misconvergence of the constant modulus algorithm (CMA) for blind equalization in the reception of M-ary PSK or QAM signals that are derived from encoding binary PN sequences. Formulas for the period and pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e4dea5fe5fbe7a0011cc8b1a3d129cf
https://doi.org/10.1109/milcom.1994.473927
https://doi.org/10.1109/milcom.1994.473927
Publikováno v:
[1991] Conference Record of the Twenty-Fifth Asilomar Conference on Signals, Systems & Computers.
Adaptive linear prediction filters have been proposed for the detection of narrowband signals in nonstationary noise and for the removal of narrowband interference from spread spectrum communications signals. In the present work, analytical results a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92c757e950672b92e9a38e44bee8c55e
https://doi.org/10.1109/acssc.1991.186527
https://doi.org/10.1109/acssc.1991.186527
Publikováno v:
MILCOM 97 MILCOM 97 Proceedings.
A downlink testbed for the Global Broadcast System (GBS) has been installed at the Naval Postgraduate School in the NPS Systems Technology Laboratory (STL). The purpose of the testbed is to conduct research on the link characteristics of GBS broadcas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb220a87c9e59632667107406252ba4f
https://doi.org/10.1109/milcom.1997.646749
https://doi.org/10.1109/milcom.1997.646749
Publikováno v:
Conference Record of The Twenty-Ninth Asilomar Conference on Signals, Systems and Computers.
The misadjustment exhibited by the constant modulus algorithm (CMA) can be excessive when it is used for blind equalization of QAM signals, thus degrading the performance of decision-directed carrier recovery algorithms. This paper introduces a hybri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe6cb507635bbd9227b5e5d859f6cc4f
https://doi.org/10.1109/acssc.1995.540535
https://doi.org/10.1109/acssc.1995.540535
Publikováno v:
Proceedings of MILCOM '95.
The most popular algorithm for blind equalization of QAM signals is the constant modulus algorithm (CMA). However, because the CMA cost function is not matched to constellations with signal points on multiple radii, CMA can exhibit excessive misadjus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eec4ec0f20232e2e4aee20898a9284d7
https://doi.org/10.1109/milcom.1995.483534
https://doi.org/10.1109/milcom.1995.483534