High-Throughput Soft-Output MIMO Detector Based on Path-Preserving Trellis-Search Algorithm

In this paper, we propose a novel path-preserving trellis-search (PPTS) algorithm and its high-speed VLSI architecture for soft-output multiple-input-multiple-output (MIMO) detection. We represent the search space of the MIMO signal with an unconstrained trellis, where each node in stage k of the tr...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:IEEE transactions on very large scale integration (VLSI) systems Jg. 20; H. 7; S. 1235 - 1247
Hauptverfasser: Yang Sun, Cavallaro, Joseph R.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York, NY IEEE 01.07.2012
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:
Algorithms
Antennas
Application-specific integrated circuit (ASIC)
Applied sciences
Complexity theory
Computer simulation
Design. Technologies. Operation analysis. Testing
Detection algorithms
Detectors
Electronics
Exact sciences and technology
General equipment and techniques
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Integrated circuits
MIMO
multiple-input-multiple-output (MIMO) detection
Physics
Searching
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing
shortest path algorithm
soft-output MIMO detector
Studies
Symbols
Throughput
Transmitting antennas
Very large scale integration
VLSI architecture
MIMO system
shortest path algorithm
Parallel algorithm
multiple-input-multiple-output (MIMO) detection
VLSI circuit
Quadrature amplitude modulation
Error estimation
Measurement sensor
Shortest path
Data transmission
VLSI architecture
Systolic network
Application-specific integrated circuit (ASIC)
Search algorithm
Circuit architecture
Case study
Complementary MOS technology
Integrated circuit
Parallel processing
Custom circuit
soft-output MIMO detector
ISSN:1063-8210, 1557-9999
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:In this paper, we propose a novel path-preserving trellis-search (PPTS) algorithm and its high-speed VLSI architecture for soft-output multiple-input-multiple-output (MIMO) detection. We represent the search space of the MIMO signal with an unconstrained trellis, where each node in stage k of the trellis maps to a possible complex-valued symbol transmitted by antenna k . Based on the trellis model, we convert the soft-output MIMO detection problem into a multiple shortest paths problem subject to the constraint that every trellis node must be covered in this set of paths. The PPTS detector is guaranteed to have soft information for every possible symbol transmitted on every antenna so that the log-likelihood ratio (LLR) for each transmitted data bit can be more accurately formed. Simulation results show that the PPTS algorithm can achieve near-optimal error performance with a low search complexity. The PPTS algorithm is a hardware-friendly data-parallel algorithm because the search operations are evenly distributed among multiple trellis nodes for parallel processing. As a case study, we have designed and synthesized a fully-parallel systolic-array detector and two folded detectors for a 4 × 4 16-QAM system using a 1.08 V TSMC 65-nm CMOS technology. With a 1.18 mm 2 core area, the folded detector can achieve a throughput of 2.1 Gbps. With a 3.19 mm 2 core area, the fully-parallel systolic-array detector can achieve a throughput of 6.4 Gbps.
Bibliographie:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 14
content type line 23
ISSN:1063-8210
1557-9999
DOI:10.1109/TVLSI.2011.2147811