Title :
Capacity Enhancement Using Ad Hoc Pico-Cells and TDD Underlay
Author :
Jain, Premvir K. ; Haas, Harald ; McLaughlin, Stephen
Author_Institution :
Sch. of Eng. & Sci., Int. Univ. Bremen
Abstract :
This paper introduces a new technique for efficiently incorporating multihop communications in a wideband code division multiple access (WCDMA) system with a clustered user distribution. For each cluster of users a mobile station (MS) is selected as a gateway to act as a relay between the other MSs and the base station (BS). The under-used resources from the FDD (frequency division duplex) uplink band are utilized for communication within the cluster (TDD underlay). This model is simulated for a number of scenarios and scheduling algorithms. It is demonstrated that the proposed enhancements lead to an improvement in the spectral efficiency of the system of up to 50%
Keywords :
ad hoc networks; broadband networks; code division multiple access; frequency division multiplexing; picocellular radio; time division multiplexing; TDD underlay; WCDMA; ad hoc pico-cells; base station; capacity enhancement; frequency division duplex; mobile station; multihop communications; scheduling algorithms; spectral efficiency; uplink band; wideband code division multiple access; Ad hoc networks; Base stations; Frequency conversion; Interference; Land mobile radio; Mobile communication; Multiaccess communication; Relays; Scheduling algorithm; Wideband;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2006 IEEE 17th International Symposium on
Conference_Location :
Helsinki
Print_ISBN :
1-4244-0329-4
Electronic_ISBN :
1-4244-0330-8
DOI :
10.1109/PIMRC.2006.254177
