Abstract
This paper studies the maximum number of users that can be allocated in
the same frequency band in case of using beamforming in a transmitter and a
receiver by simulations. With the use of smart antennas the spectrum can be
used efficiently, and at the same time the quality of service (QoS) of
secondary users is increased in comparison with omnidirectional antennas. The
results indicate that more users can transmit in the same area while
fulfilling QoS constraints. The obtained results regarding spectrum sensing
state that beamforming gives a great improvement in comparison with detection
with omnidirectional antennas. Beamforming leads to power savings because the
transmission power is sent to the wanted direction. In addition, directional
antennas decrease the time needed for sensing and therefore more time for
secondary transmission is left than with omnidirectional antennas.
| Original language | English |
|---|---|
| Title of host publication | 2011 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM) |
| Publisher | IEEE Institute of Electrical and Electronic Engineers |
| Pages | 360-364 |
| ISBN (Electronic) | 978-1-936968-19-0, 978-1-936968-01-5 |
| ISBN (Print) | 978-1-4577-0140-5 |
| DOIs | |
| Publication status | Published - 2011 |
| MoE publication type | A4 Article in a conference publication |
| Event | 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM - Osaka, Japan Duration: 1 Jun 2011 → 3 Jun 2011 Conference number: 6 |
Conference
| Conference | 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM |
|---|---|
| Abbreviated title | CROWNCOM |
| Country/Territory | Japan |
| City | Osaka |
| Period | 1/06/11 → 3/06/11 |
Keywords
- interference
- adaptive antenna arrays
- frequency allocation
- array signal processing
- sensors
- spatial dimension exploitation