Publications

In the CDMA downlink chip-level equalization at the receiver can restore the orthogonality lost in the time-dispersive channel.

Many communications channels, including telephone channels, contain noise which comes in short bursts, such as noise from impulses.

We consider a communication model over a binary channel in which the transmitter knows which bits of the n-bit transmission are prone to loss in the channel.

Implementation principles are proposed, and a comparison of linearization solutions is presented for beamforming antenna arrays driven by multiple power amplifiers.

In an important new class of discrete-charge-transfer devices including charge-coupled devices1 (CCD's), bucket-brigade shift registers,2-3 and other shift-register or image-detection or display de

Round waveguide with dielectric lining shows promise as a communication medium.1 The circular electric wave loss in perfectly straight and round metallic waveguide decreases steadily with frequency

We report in this paper the measured linewidth enhancement factors, linewidths, and single-mode stability for 1.3micron wavelength distributed-feedback lasers with detuned Bragg wavelengths.

A measurement of the six-line Mossbauer Zeeman spectrum of (57)Fe in Fe(80)B(20) ferromagnetic glass reveals a linewidth asymmetry involving the three line-pairs L(1) and L(7-1), i = 1,2,3.

A 1.55micron wavelength InGaAsP distributed feedback (DFB) laser with an anti-reflection coated facet has been coupled to a single-mode fiber with a reflective end to construct a compact narrow-li

The linewidth factor alpha in an InGaAsP/InP multi-quantum- well (MQW) laser has been determined from the spontaneous emission spectra below threshold.