the two terms information and communication have some ambiguities. yet, there is not a consensus on their definitions. but they have some common characteristics, which make them be used interchangeably, information is the basic element for communication. information, inevitably. does net end to communication while when there is communication, there is information 100. communication is the natur...

In wireless communications, the assumption that the transmitter has perfect channel state information (CSI) is often unreasonable, due to feedback delays, estimation errors, and quantization errors. In order to accurately assess system performance, a more careful analysis with imperfect CSI is needed. In this paper, the impact of partial CSI due to feedback delays in a multiuser Orthogonal Freq...

A communication channel consists of a transmitter, a receiver, and some medium between these two (possibly vacuum) that supports transmission of signals. In most cases, the transmitter and/or receiver have limited bandwidth, while the medium could transmit pulses of arbitrarily small time width. Hence, “channel capacity” is more a property of the transmitter and receiver, than of the signal-tra...

We consider a discrete-time multi-channel network where the destination collects time-sensitive packets from multiple sources with sided channel information. The popular metric, Age of Information (AoI), is applied to measure data freshness at destination. Due interference constraint, only disjoint source-channel pairs can be chosen for transmission in each time slot, and decision maker should ...