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On Complex Enumeration for Multiuser MIMO Vector Precoding

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TSC University of Mondragon
TSC University of Mondragon

Presentation held at the 19th European Signal Processing Conference, EUSIPCO 2011, Barcelona, SPain

Tecnología
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IMPLEMENTATION OF COMPLEX ENUMERATION FOR MULTIUSER MIMO VECTOR PRECODING Signal Theory and Communications Area Department of Electronics and Computer Science, University of Mondragon Maitane Barrenechea , Mikel Mendicute, Idoia Jiménez and Egoitz Arruti
Outline ,[object Object],[object Object],[object Object],[object Object],[object Object]
Introduction Vector Precoding ,[object Object]
Introduction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Tree search techniques
Introduction Tree search techniques: The sphere encoder ,[object Object],[object Object]
Introduction Tree search techniques: The K-Best ,[object Object],[object Object],[object Object],[object Object]
Introduction Tree search techniques: The fixed sphere encoder (FSE) ,[object Object],[object Object],[object Object],[object Object]
Complex Enumeration Schnorr-Euchner Enumeration ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Outline ,[object Object],[object Object],[object Object],[object Object],[object Object]
Complex Enumeration Schnorr-Euchner (S-E) Enumeration ,[object Object],[object Object],[object Object],[object Object],[object Object]
Complex Enumeration Methods for Complex Enumeration ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[Hochwald2003] Hochwald, B. and ten Brink, S. , “Achieving near-capacity on a multiple antenna channels,” IEEE Transactions on Communications, vol. 51, pp. 389–399, 2003.
Complex Enumeration Methods for Complex Enumeration ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Outline ,[object Object],[object Object],[object Object],[object Object],[object Object]
The Puzzle Enumerator Step 1: Setting the size of the complex grid A.- Define from the distribution of B.- Compute the minimum cardinality of the set R z
The Puzzle Enumerator Step 2: Local Enumeration Step 3: Compute Boundary Lines Enumeration index  Values Locally Enumerated 2-3 2 4-7 3 8-11 4
The Puzzle Enumerator Step 4: Identify the corresponding region  =2  =3  =4  =5  =6  =7  =8
The Unordered Puzzle Enumerator ,[object Object],[object Object],[object Object],[object Object],Set of most preferable nodes
Outline ,[object Object],[object Object],[object Object],[object Object],[object Object]
Implementation of Complex Enumeration ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Fair comparison 8 MCUs added to the puzzle enumerator design
Implementation of Complex Enumeration Architectures Full Sort Circular Subsets & Neighbour expansion
Implementation of Complex Enumeration Architectures Puzzle Enumerator
Implementation Results Latency ,[object Object]
Implementation Results Device Occupation No distance computations required
Outline ,[object Object],[object Object],[object Object],[object Object],[object Object]
Conclusions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Thanks for your attention Maitane Barrenechea [email_address]

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On Complex Enumeration for Multiuser MIMO Vector Precoding

  • 1. IMPLEMENTATION OF COMPLEX ENUMERATION FOR MULTIUSER MIMO VECTOR PRECODING Signal Theory and Communications Area Department of Electronics and Computer Science, University of Mondragon Maitane Barrenechea , Mikel Mendicute, Idoia Jiménez and Egoitz Arruti
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  • 14. The Puzzle Enumerator Step 1: Setting the size of the complex grid A.- Define from the distribution of B.- Compute the minimum cardinality of the set R z
  • 15. The Puzzle Enumerator Step 2: Local Enumeration Step 3: Compute Boundary Lines Enumeration index  Values Locally Enumerated 2-3 2 4-7 3 8-11 4
  • 16. The Puzzle Enumerator Step 4: Identify the corresponding region  =2  =3  =4  =5  =6  =7  =8
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  • 20. Implementation of Complex Enumeration Architectures Full Sort Circular Subsets & Neighbour expansion
  • 21. Implementation of Complex Enumeration Architectures Puzzle Enumerator
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  • 23. Implementation Results Device Occupation No distance computations required
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  • 26. Thanks for your attention Maitane Barrenechea [email_address]