In this paper, we derive a capacity inner bound for a synchronous Gaussian Z channel with intersymbol interference (ISI) under input power constraints. This is done by converting the original channel model into an n-block memoryless circular Gaussian Z channel (n-CGZC) and successively decomposing the n-block memoryless channel into a series of independent parallel channels in the frequency dom...

We consider a two transmitter two receiver channel where independent data is sent on each communication link of the system. We consider a three-link system, termed the “Z” channel, in which one transmitter is connected to both receivers while the other transmitter is only connected to one of the receivers. Thus, the “Z” channel has a three dimensional capacity region. We characterize the capaci...

loading for zSeries G. Banzhaf F. W. Brice G. R. Frazier J. P. Kubala T. B. Mathias V. Sameske This paper describes a new kind of initial program loading (IPL) for IBM zSeries servers. The new IPL protocol expands the set of input/output devices that can be used during IPL to include Small Computer System Interface (SCSI) Fibre Channel protocol (FCP) disk devices (SCSI disks). We begin by descr...

Golomb analyzed the Z-channel, a memoryless channel with two input symbols and two output symbols, where one of the input symbols is transmitted with noise while the other is transmitted without noise, and the output symbol transmission times are equal. We generalize to the timed Z-channel, where the output symbol transmission times are not equal. The timed Z-channel appears as the basis for a ...

The diversity-multiplexing tradeoff (DMT) for interference networks, such as the interference channel, the X channel, the Z interference channel and the Z channel, is analyzed. In particular, we investigate the impact of rate-splitting and channel knowledge at the transmitters. We also use the DMT of the Z channel and the Z interference channel to distill insights into the “loud neighbor” probl...

MIMO Z Channel is investigated in this paper. We focus on how to tackle the interference when different users try to send their codewords to their corresponding receivers while only one user will cause interference to the other. We assume there are two transmitters and two receivers each with two antennas. We propose a strategy to remove the interference while allowing different users transmit ...

Our timed Z-channel (a general case of the Z-channel) appears as the basis for a large class of covert channels. Golomb analyzed the Z-channel, a memo-ryless channel with two input symbols and two output symbols, where one of the input symbols is transmitted with noise while the other is transmitted without noise, and the output symbol transmission times are equal. We introduce the timed Z-chan...

Our timed Z-channel (a general case of the Zchannel) appears as the basis for a large class of covert channels. Golomb analyzed the Z-channel, a memoryless channel with two input symbols and two output symbols, where one of the input symbols is transmitted with noise while the other is transmitted without noise, and the output symbol transmission times are equal. We introduce the timed Z-channe...