TY - GEN
T1 - Optimal flashy transmission in training-based MISO TDD systems
AU - Zhou, Xiangyun
AU - Sadeghi, Parastoo
AU - Lamahewa, Tharaka A.
AU - Hjørungnes, Are
PY - 2011
Y1 - 2011
N2 - We consider a flashy transmission scheme in multiple-input single-output (MISO) systems. In order to efficiently utilize the limited energy budget, only a portion of the available time is used for the actual transmission. For block-wise transmissions, we define the flashiness as the percentage of blocks used for the actual transmission. Each transmission block consists of a reverse training phase and a data transmission phase. Using a capacity lower bound as the figure of merit, we show that the optimal training and data transmit power does not change with the energy budget as long as the flashiness is strictly less than one. We provide a simple design guideline to obtain closed-form solutions for the optimal flashiness, training power, as well as data transmit power which maximize the capacity lower bound. Our numerical results demonstrate a significant rate improvement by using the optimal flashy transmission in the low signal-to-noise ratio (SNR) regime, compared to the non-flashy scheme which uses all blocks for transmission.
AB - We consider a flashy transmission scheme in multiple-input single-output (MISO) systems. In order to efficiently utilize the limited energy budget, only a portion of the available time is used for the actual transmission. For block-wise transmissions, we define the flashiness as the percentage of blocks used for the actual transmission. Each transmission block consists of a reverse training phase and a data transmission phase. Using a capacity lower bound as the figure of merit, we show that the optimal training and data transmit power does not change with the energy budget as long as the flashiness is strictly less than one. We provide a simple design guideline to obtain closed-form solutions for the optimal flashiness, training power, as well as data transmit power which maximize the capacity lower bound. Our numerical results demonstrate a significant rate improvement by using the optimal flashy transmission in the low signal-to-noise ratio (SNR) regime, compared to the non-flashy scheme which uses all blocks for transmission.
UR - http://www.scopus.com/inward/record.url?scp=79953150565&partnerID=8YFLogxK
U2 - 10.1109/AUSCTW.2011.5728732
DO - 10.1109/AUSCTW.2011.5728732
M3 - Conference contribution
SN - 9781424497157
T3 - Proceedings of the 2011 Australian Communications Theory Workshop, AusCTW 2011
SP - 25
EP - 30
BT - Proceedings of the 2011 Australian Communications Theory Workshop, AusCTW 2011
T2 - 12th Annual Australian Communications Theory Workshop, AusCTW 2011
Y2 - 31 January 2011 through 3 February 2011
ER -