The energy harvesting multi-way relay channel with intermittent data: the impact of buffer sizes

Abstract

In this paper, a multi-way relay channel is considered with energy harvesting nodes. The harvested energy at each node can be stored in a battery of finite capacity. Additionally, each node employs a data buffer of limited size to store data prior to transmission. Data packets to be exchanged between the nodes arrive at the source nodes in an intermittent fashion. In this setup, the offline sum throughput maximization problem, which turns out to be a convex optimization problem, is solved. The corresponding online problem is formulated, and a backward induction-based optimal solution is proposed. In addition, a near-optimum low complexity solution is presented. It is noted that the solutions for the offline and online throughput maximization problems for the multi-way relay channel also provide solutions for its special cases, e.g., the multi-pair two-way relay channel, the two-way channel, and others. Numerical results are presented to demonstrate the resulting optimal transmission policies for various channel setups, comparing the sum throughput to upper and lower bounds, and demonstrating the impact of buffer sizes at the relay.

The Control Circuit Design of Radar Data Acquisition System

“…In order to ensure the acquisition board when it receives the test results, the batch of data still in the buffer zone, the system design four level data buffer [2], in the circuit design, each level of data output control signal with the next level of input control signals use the same control line, so the hardware obstacle free to read and write timing confusion and possible data loss. Before starting the data acquisition, the control circuit will automatically reset the address of the FIFO [3].…”