Accession Number : ADA622042


Title :   Equalization in Aeronautical Telemetry Using Multiple Antennas


Descriptive Note : Technical paper


Corporate Author : BRIGHAM YOUNG UNIV PROVO UT DEPT OF ELECTRICAL AND COMPUTER ENGINEERING


Personal Author(s) : Rice, Michael ; Afran, M S ; Saquib, Mohammad


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a622042.pdf


Report Date : Apr 2014


Pagination or Media Count : 42


Abstract : This paper introduces a generalized time-reversed space-time block codes (GTR-TRSTBC) as both a conceptual tool to examine the impact of unequal power allocation in equalized single-carrier systems employing two transmit antennas and as a method for exploiting partial channel state information by the transmitter. The generalization involves unequal power allocation parameterized by rho. The criteria for selecting the optimum is minimizing the residual mean-squared error at the MMSE equalizer output. GTR-STBC is applied to measured channel impulse responses and a simple statistical channel model. The results show that 1) the optimum value of gives the best tradeoff between signal-to-noise ratio and ISI; 2) equal power allocation may not be the optimum power allocation when channel state information is available; and 3) the optimum profile of over measured channels is significantly different than from that in statistical channel models.


Descriptors :   *TELEMETER SYSTEMS , AIR TO SURFACE , ALGORITHMS , ANTENNAS , BANDWIDTH , BROADBAND , CHANNELS , EQUALIZATION , INTERFERENCE , MODULATION , MULTIPATH TRANSMISSION , RADIO TELEMETRY , SIGNAL TO NOISE RATIO , TRANSMITTERS


Subject Categories : Telemetry
      Radio Communications


Distribution Statement : APPROVED FOR PUBLIC RELEASE