Abstract
The purpose of a multi-hop relay in WiMAX system is to
enhance cell coverage, throughput and system capacity.
IEEE802.16j standard specifies a multi-hop relay and
IEEE802.16m standard recently considers adopting a
multi-hop relay. Besides, many research groups insist
that cooperative communication including transparent
relay saves energy as well as brings better performance.
However, they don't provide specific data for transparent
relay in a realistic communication system such as WiMAX.
In this paper, we study on how much power saving it can
be achieved when using transparent relay with cooperative
strategy. We firstly propose cooperative strategy for
transparent relay in order to achieve diversity gain and
then investigate how much gain we can achieve and how
much power saving we can have in WiMAX model. The
spectral efficiency of a distributed Alamouti scheme is
N/2N sym/sec/Hz for transparent relay but the one of the
proposed scheme is (N-1)/N sym/sec/Hz which is same as
original purpose of transparent relay. In addition it is
shown that transparent relay with cooperative strategy
has up to 60% power saving under the given simulation
configuration. (9 refs.)
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the IEEE 73rd Vehicular Technology Conference, VTC Spring 2011 |
| Place of Publication | Piscataway, NJ, USA |
| Publisher | IEEE Institute of Electrical and Electronic Engineers |
| Number of pages | 5 |
| ISBN (Electronic) | 978-1-4244-8331-0 |
| ISBN (Print) | 978-1-4244-8332-7, 978-1-4244-8329-7 |
| DOIs | |
| Publication status | Published - 2011 |
| MoE publication type | A4 Article in a conference publication |
| Event | IEEE 73rd Vehicular Technology Conference, VTC Spring 2011 - Yokohama, Japan Duration: 15 May 2011 → 18 May 2011 |
Conference
| Conference | IEEE 73rd Vehicular Technology Conference, VTC Spring 2011 |
|---|---|
| Abbreviated title | VTC Spring 2011 |
| Country/Territory | Japan |
| City | Yokohama |
| Period | 15/05/11 → 18/05/11 |