Publications

We present and analyze a new robust feedback and transmit strategy for multiuser MIMO downlink communication systems, termed Rate Approximation (RA).

We report on an actively mode-locking tunnel injection quantum dash Fabry-Perot laser diode packaged in a module at 42.7GHz, generating nearly Fourier transform limited pulses with a pulse width of

Determining the traffic performance of complex multistage central office switching systems without actual measurement can be a major problem for the communications engineer.

Interference between stations in multi-transponder TDMA radio systems can cause one or more stations using simultaneous time slots to have unacceptable performance.

We consider a sampling scheme where a set of multiband input signals is passed through a MIMO channel and the outputs are sampled nonuniformly.

The interacting arsenic-antisite arsenic-interstitial model for the structure of EL2 (a native metastable defect in GaAs) has been analyzed using Greens function calculations of the level structur

We observe the effect of negative absolute mobility for minority holes in n-modulation-doped GaAs quantum wells at low temperatures.

We report the observation of negative absolute mobility of electrons (i.e., a drift toward the negative electrode) in p-modulation doped GaAs quantum wells.

This paper investigates the performance of the UMTS frequency-division duplex (FDD) Random Access Channel (RACH).

We have measured the infrared photoconductivity of an alternatively doped multi-quantum well structure.