Abstract
Reliable spectrum sensing is one of the key technologies
for enabling spectrum coexistence. In this paper, co
operative spectrum sensing based on the Welch periodogram
is studied in frequency selective fading environment for
quadrature phase shift keying (QPSK) and orthogonal
frequency division multiplexing (OFDM) signals. Parameter
selection for sensing OFDM signal is discussed, and
near-optimal values for frequency averaging for QPSK and
OFDM signals are derived. The results, given as receiver
operating characteristic (ROC) curves, indicate that the
frequency-selective fading degrades the performance of
the sensing. This could be compensated by co-operation of
several sensing nodes. Both analytical and simulation
results indicate that best performance of spectrum
sensing is achieved with different combining rules in the
case of signal passing through additive white Gaussian
noise (AWGN) or fading channels. (11 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 |