PHY-MAC performance of a MIMO network-assisted multiple access scheme

Author

Madueño, Maribel ; Vidal, Josep

Author_Institution

Signal Process. & Commun. Group, Tech. Univ. of Catalonia, Barcelona, Spain

fYear

2005

fDate

5-8 June 2005

Firstpage

875

Lastpage

879

Abstract

PHY-MAC analysis of the feedback-free network-assisted diversity multiple access (FF-NDMA) scheme is tackled in this work, for both SISO and MIMO configurations with orthogonal space-time block codes. FF-NDMA was envisaged as a collision resolution technique for uncoordinated wireless ad-hoc networks. In the SISO case collision resolution is achieved by transmitting time diversity in different slots (repeating packets) while in the MIMO case both time and spatial diversity are exploited. In this paper it is shown that retransmission diversity may improve the collision channel, in terms of energy savings, range extension or bandwidth efficiency.

Keywords

MIMO systems; access protocols; ad hoc networks; antenna arrays; block codes; diversity reception; multi-access systems; space-time codes; FF-NDMA scheme; MIMO network; PHY-MAC performance; SISO configuration; bandwidth efficiency; collision resolution technique; diversity multiple access; energy saving; feedback-free network; orthogonal space-time block code; range extension; spatial diversity; time diversity transmission; uncoordinated wireless ad-hoc network; Access protocols; Ad hoc networks; Bandwidth; Block codes; Diversity reception; Energy resolution; MIMO; Signal processing; Spatial resolution; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Advances in Wireless Communications, 2005 IEEE 6th Workshop on

Print_ISBN

0-7803-8867-4

Type

conf

DOI

10.1109/SPAWC.2005.1506265

Filename

1506265