TY - GEN
T1 - Multi-spectrum and transmit-antenna switched diversity schemes for spectrum sharing systems
T2 - 2012 IEEE Globecom Workshops, GC Wkshps 2012
AU - Sayed, Mostafa
AU - Abdallah, Mohamed
AU - Alouini, Mohamed Slim
AU - Qaraqe, Khalid A.
PY - 2012
Y1 - 2012
N2 - In spectrum sharing systems, a secondary user (SU) is allowed to share the spectrum with a primary licensed user under the condition that the interference at the the primary user receiver (PU-Rx) is below a predetermined threshold. Joint primary spectrum and transmit antenna selection diversity schemes can be utilized as an efficient way to meet the quality of service (QoS) demands of the SUs while satisfying the interference constraint. In this paper, we consider a secondary link comprised of a secondary transmitter (SU-Tx) equipped with multiple antennas and a single-antenna secondary receiver (SU-Rx) sharing the same spectrum with a number of primary users (PUs) operating at distinct spectra. We present a performance analysis for two primary spectrum and transmit antenna switched selection schemes with different amount of feedback requirements. In particular, assuming Rayleigh fading and BPSK transmission, we derive approximate BER expressions for the presented schemes. For the sake of comparison, we also derive a closed-form BER expression for the optimal selection scheme that selects the best pair in terms of the SU-Rx signal-to-noise ratio (SNR) which has the disadvantage of high feedback requirements. Finally, our results are verified with numerical simulations.
AB - In spectrum sharing systems, a secondary user (SU) is allowed to share the spectrum with a primary licensed user under the condition that the interference at the the primary user receiver (PU-Rx) is below a predetermined threshold. Joint primary spectrum and transmit antenna selection diversity schemes can be utilized as an efficient way to meet the quality of service (QoS) demands of the SUs while satisfying the interference constraint. In this paper, we consider a secondary link comprised of a secondary transmitter (SU-Tx) equipped with multiple antennas and a single-antenna secondary receiver (SU-Rx) sharing the same spectrum with a number of primary users (PUs) operating at distinct spectra. We present a performance analysis for two primary spectrum and transmit antenna switched selection schemes with different amount of feedback requirements. In particular, assuming Rayleigh fading and BPSK transmission, we derive approximate BER expressions for the presented schemes. For the sake of comparison, we also derive a closed-form BER expression for the optimal selection scheme that selects the best pair in terms of the SU-Rx signal-to-noise ratio (SNR) which has the disadvantage of high feedback requirements. Finally, our results are verified with numerical simulations.
KW - Transmit selection diversity
KW - spectrum sharing
KW - transmit switched diversity
UR - http://www.scopus.com/inward/record.url?scp=84875682532&partnerID=8YFLogxK
U2 - 10.1109/GLOCOMW.2012.6477564
DO - 10.1109/GLOCOMW.2012.6477564
M3 - Conference contribution
AN - SCOPUS:84875682532
SN - 9781467349413
T3 - 2012 IEEE Globecom Workshops, GC Wkshps 2012
SP - 168
EP - 173
BT - 2012 IEEE Globecom Workshops, GC Wkshps 2012
Y2 - 3 December 2012 through 7 December 2012
ER -