Multiuser Relaying over Mixed RF/FSO Links
Artikel i vetenskaplig tidskrift, 2014

A multiuser dual-hop relaying system over mixed radio frequency/free-space optical (RF/FSO) links is investigated. Specifically, the system consists of m single-antenna sources, a relay node equipped with n >= m receive antennas and a single photo-aperture transmitter, and one destination equipped with a single photo-detector. RF links are used for the simultaneous data transmission from multiple sources to the relay. The relay operates under the decode-and-forward protocol and utilizes the popular V-BLAST technique by successively decoding each user's transmitted stream. Two common norm-based orderings are adopted, i.e., the streams are decoded in an ascending or a descending order. After V-BLAST, the relay retransmits the decoded information to the destination via a point-to-point FSO link in m consecutive timeslots. Analytical expressions for the end-to-end outage probability and average symbol error probability of each user are derived, while closed-form asymptotic expressions are also presented. Capitalizing on the derived results, some engineering insights are manifested, such as the coding and diversity gain of each user, the impact of the pointing error displacement on the FSO link and the V-BLAST ordering effectiveness at the relay.

dual-hop communication

Electrical & Electronic

GENERALIZED SELECTION CRITERION

PERFORMANCE

ANALYSIS

ordered successive interference cancellation (SIC)

DIVERSITY

V-BLAST

Telecommunications

SPACE OPTICAL LINKS

V-BLAST reception

Decode-and-forward (DF)

OUTAGE

MIMO SYSTEMS

ATMOSPHERIC-TURBULENCE

WIRELESS

Engineering

mixed RF/FSO systems

FADING CHANNELS

Författare

N. I. Miridakis

Panepistimion Pireos

Piraeus University of Applied Sciences

Michail Matthaiou

Signaler och system, Signalbehandling och medicinsk teknik, Signalbehandling

G. K. Karagiannidis

Khalifa University of Science and Technology

Aristotle University of Thessaloniki

IEEE Transactions on Communications

0090-6778 (ISSN)

Vol. 62 1634-1645

Ämneskategorier

Telekommunikation

DOI

10.1109/tcomm.2014.022314.130762