Ali A. Haghighi

Learn More
—In this paper we focus on the analysis of the end-to-end outage probability of hybrid automatic repeat request (HARQ) in a multi-hop, block-fading channel. First, we use a Markov chain to model the multi-hop system with truncated HARQ type-I (HARQ-I) and derive closed-form expressions for the outage probability and throughput; we also obtain lower and(More)
We propose two high spectral efficient relaying protocols with low overhead including: the priority based relay selection (PRS), and the priority based relay selection with incremental transmission (PRSIT). In PRS and PRSIT, relay selection and scheduling are integrated to achieve full diversity order and high spectral efficiency. We define the overhead per(More)
Changes in environmental conditions may lead to modifications in structural development of plant root. Effects of supplementary irrigation and soil depths (0–90 cm) on anatomical changes in xylem were investigated in rain-fed Vitis vinifera L. cv. Yaghooti-Syah Shiraz. Irrigated and control roots were prepared according to routine histological procedure.(More)
— In this paper we investigate the capacity of random wireless networks in which transmitters are equipped with multi-antennas. A quantized version of channel direction information (CDI) is also available, provided by the associated single antenna receivers. We adopt tools of stochastic geometry and random vector quantization to incorporate the impacts of(More)
  • 1