Multiple-antenna systems are a promising approach to increase the data rate of wireless communication systems. One efficient possibility is spatialmultiplexing of the transmitted symbols over several antennas.Many different MIMO detector algorithms exist for this spatialmultiplexing. The major difference between differentMIMOdetectors is the resulting communications performance and implementation complexity, respectively. Particularly closed-loop MIMO systems have attained a lot of attention in the last years. In a closed-loop system, reliability information is fed back fromthe channel decoder to the MIMO detector. In this paper, we derive a basic framework to compare different soft-input soft-output MIMO detectors in open- and closed-loop systems. Within this framework, we analyze a depth-first sphere detector and a breadth-first fixed effort detector for different application scenarios and their effects on area and energy efficiency on the whole system.We present all systemcomponents under open- and closed-loop system aspects and determine the overall implementation cost for changing an open-loop system in a closed-loop system.

A System View on Iterative MIMO Detection: Dynamic Sphere Detection versus Fixed Effort List Detection / Christina Gimmler, Dumont; Frank, Kienle; Wu, Bin; Masera, Guido. - In: VLSI DESIGN. - ISSN 1065-514X. - ELETTRONICO. - 2012:(2012), pp. 1-14. [10.1155/2012/826350]

A System View on Iterative MIMO Detection: Dynamic Sphere Detection versus Fixed Effort List Detection

WU, BIN;MASERA, Guido
2012

Abstract

Multiple-antenna systems are a promising approach to increase the data rate of wireless communication systems. One efficient possibility is spatialmultiplexing of the transmitted symbols over several antennas.Many different MIMO detector algorithms exist for this spatialmultiplexing. The major difference between differentMIMOdetectors is the resulting communications performance and implementation complexity, respectively. Particularly closed-loop MIMO systems have attained a lot of attention in the last years. In a closed-loop system, reliability information is fed back fromthe channel decoder to the MIMO detector. In this paper, we derive a basic framework to compare different soft-input soft-output MIMO detectors in open- and closed-loop systems. Within this framework, we analyze a depth-first sphere detector and a breadth-first fixed effort detector for different application scenarios and their effects on area and energy efficiency on the whole system.We present all systemcomponents under open- and closed-loop system aspects and determine the overall implementation cost for changing an open-loop system in a closed-loop system.
File in questo prodotto:
File Dimensione Formato  
826350.pdf

non disponibili

Tipologia: 1. Preprint / submitted version [pre- review]
Licenza: Non Pubblico - Accesso privato/ristretto
Dimensione 835.78 kB
Formato Adobe PDF
835.78 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11583/2496930
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo