Dynamic single frequency networks

被引：24

作者：

Eriksson, M ^{[1
]}

机构：

[1] Mid Sweden Univ, Royal Inst Technol, Dept Signals Sensors & Syst, Radio Commun Syst Lab, SE-85170 Sundsvall, Sweden

来源：

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS | 2001年 / 19卷 / 10期

关键词：

DPA; DSFN; DVB-T; fairness; FSSE; macrodiversity; OFDM; scheduling; SFN;

D O I：

10.1109/49.957306

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Wireless asymmetric Internet access with a downlink peak bit rate of 10 to 30 Mb/s can be achieved by using the terrestrial digital video broadcasting system (DVB-T) as a supplemental downlink together with today's cellular systems. This paper is a study of dynamic radio resource management on a packet-by-packet basis for this broadband downlink. The dynamic single frequency networks (DSFN) scheme is evaluated. It exploits the macrodiversity capability of the OFDM modulation scheme. The transmitters are dynamically divided into groups of transmitters that send the same information at the same channel frequency simultaneously. The fairly shared spectrum efficiency (FSSE), in bits per second per Hertz per site, which is a combined measurement of maximum throughput and fairness, is evaluated for best-effort traffic. DSFN improves the FSSE by 100% to 370%, for a certain set of test cases, in comparison to the dynamic packet assignment (DPA) scheme, which combines packet scheduling with dynamic channel assignment (DCA).

引用

页码：1905 / 1914

页数：10