A Pipelined Reduced Complexity Two-Stages Parallel LMS Structure for Adaptive Beamforming
| Autor: | Rafic Ayoubi, Ghattas Akkad, Elie Inaty, Ali Mansour, Jalal Abdulsayed Srar, Bachar El-Hassan |
|---|---|
| Přispěvatelé: | Lab-STICC_ENSTAB_CACS_COM, Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (Lab-STICC), Institut Mines-Télécom [Paris] (IMT)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-École Nationale d'Ingénieurs de Brest (ENIB)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-Institut Mines-Télécom [Paris] (IMT)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-École Nationale d'Ingénieurs de Brest (ENIB)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL), Lebanese Univ., Tripoli, Lebanon (DEPT. OF COMPUT. & COMMUN.), Lebanese University [Beirut] (LU), University of Balamand - UOB (LIBAN), Misrata University, Agence de l' Innovation de Defense a la Direction Generale de l'Armement-Ministere des Armees (AID-DGA), French National Research Agency (ANR), ANR-19-ASTR-0005,SaintCyber,Système AnalogIque Numérique mulTicouche pour la CYBerdéfense ou la survEillance Radio.(2019), École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Adaptive Beamforming
Computer science Errors Adaptive arrays 02 engineering and technology Directional patterns (antenna) Upper and lower bounds Stability (probability) Antenna array Least mean squares filter [SPI]Engineering Sciences [physics] [INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing Convergence (routing) 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Hardware architecture Pipelines Quantization (signal processing) 020206 networking & telecommunications Computer hardware LMS [SPI.TRON]Engineering Sciences [physics]/Electronics Array signal processing 020201 artificial intelligence & image processing Algorithm Adaptive beamformer |
| Zdroj: | IEEE Transactions on Circuits and Systems I: Regular Papers IEEE Transactions on Circuits and Systems I: Regular Papers, IEEE, 2020, 67 (12), pp.5079-5091. ⟨10.1109/TCSI.2020.2994812⟩ |
| ISSN: | 1549-8328 1558-0806 |
| Popis: | International audience; In this paper, we propose a reduced complexity parallel least mean square structure (RC-pLMS) for adaptive beamforming and its pipelined hardware implementation. RC-pLMS is formed by two least mean square (LMS) stages operating in parallel (pLMS), where the overall error signal is derived as a combination of individual stage errors. The pLMS is further simplified to remove the second independent set of weights resulting in a reduced complexity pLMS (RC-pLMS) design. In order to obtain a pipelined hardware architecture of our proposed RC-pLMS algorithm, we applied the delay and sum relaxation technique (DRC-pLMS). Convergence, stability and quantization effect analysis are performed to determine the upper bound of the step size and assess the behavior of the system. Computer simulations demonstrate the outstanding performance of the proposed RC-pLMS in providing accelerated convergence and reduced error floor while preserving a LMS identical O(N) complexity, for an antenna array of N elements. Synthesis and implementation results show that the proposed design achieves a significant increase in the maximum operating frequency over other variants with minimal resource usage. Additionally, the resulting beam radiation pattern show that the finite precision DRC-pLMS implementation presents similar behavior of the infinite precision theoretical results. |
| Databáze: | OpenAIRE |
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