Title :
Switched Multi-Radio Transmission Diversity for Non-Collocated Radio Accesses
Author :
Reza Karimi, H. ; Koudouridis, Georgios P. ; Dimou, Konstantinos ; Karlsson, Peter
Author_Institution :
Lucent Technol. Bell Lab.
Abstract :
We evaluate the spectral efficiency gains observed through multi-radio transmission diversity (MRTD), whereby packets of data are jointly scheduled for downlink transmission over multiple independent radio accesses. We specifically address downlink switched MRTD employed across macro- and pico-cellular radio accesses with non-collocated base stations in a hierarchical cell structure. It is shown that while significant gains can be achieved via MRTD among collocated macro-cell (or pico-cell) base stations, tight cooperation across non-collocated macro-and pico-cell base stations is only beneficial for a small subset of possible geometries. The impact of CQI reporting delays is also investigated
Keywords :
diversity reception; microcellular radio; multi-access systems; picocellular radio; radio access networks; telecommunication switching; channel quality information; downlink switched multi-radio transmission diversity; hierarchical cell structure; macro-cellular radio accesses; multiple independent radio accesses; noncollocated radio accesses; pico-cellular radio accesses; spectral efficiency gains; Ambient networks; Base stations; Delay; Design optimization; Downlink; Geometry; Packet switching; Rats; Research and development; Scheduling algorithm; Ambient Networks; generic link layer; joint scheduling; multi-radio access; multi-radio transmission diversity; networks beyond 3G; radio access allocation;
Conference_Titel :
Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd
Conference_Location :
Melbourne, Vic.
Print_ISBN :
0-7803-9391-0
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2006.1682797
