Peter W. Wolniansky

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We investigate robust wireless communication in high-scattering propagation environments using multi-element antenna arrays (MEA’s) at both transmit and receive sites. A simplified, but highly spectrally efficient space–time communication processing method is presented. The user’s bit stream is mapped to a vector of independently modulated equal bit-rate(More)
Narrowband multiple input–multiple -output (MIMO) measurements using 16 transmitters and 16 receivers at 2.11 GHz were carried out in Manhattan. High capacities were found for full, as well as smaller array configurations, all within 80% of the fully scattering channel capacity. Correlation model parameters are derived from data. Spatial MIMO channel(More)
Multiple-input–multiple-output (MIMO) systems have the potential to achieve very high capacities, depending on the propagation environment. Capacity increases as signal correlation decreases. We present the measurements of a MIMO system under strong and weak line-of-sight conditions. The system capacity decreases as the distance from the transmitter(More)
In this paper, we analyze the behavior of a multiple element antenna system in an indoor environment based on the measurements taken in the Lucent Bell Labs building in Crawford Hill, NJ, with a system of 12 transmitters and 15 receivers. In particular, we investigate the capacity behavior with respect to the polarization of the transmitting/receiving(More)
In this paper, a multiple-input multiple-output (MIMO) extension for a third generation (3G) wireless system is described. The integration of MIMO concepts within the existing UMTS standard and the associated space-time RAKE receiver are explained. An analysis is followed by a description of an actual experimental MIMO transmitter and receiver architecture,(More)
In this paper we evaluate performance of the vertical BLAST (VBLAST) receiver algorithm in multipletransmitter/multiple-receiver (MTMR) cellular WCDMA systems. We assume that the VBLAST algorithm is executed on a symbol level (i.e, on the despreaded received signal), following a conventional bank of matched filters (correlators). Also, we introduce concept(More)
The space-time block coding (STBC) makes use of a high algebraic structure to provide diversity gain. Paper shows that the multiple receiver antennas increase the diversity, which results in high SNR. The two illustrative examples of Multiple Input Multiple Output (MIMO) system in wireless network using STBC are presented. Firstly, paper compares the case(More)
High data rates within the limited radio frequency (RF) spectrum is always desirable that leads to radios with capabilities beyond a single-input single-output (SISO) topology. Recently introduced wireless systems have adopted multiple-input multiple-output (MIMO) topologies that use two or more transmitters and two or more receivers to send data(More)
Multiple input multiple outputs-orthogonal frequency division multiplexing (MIMO-OFDM) is the key procedure for era correspondences frameworks. In this paper, a few identification calculations dependent upon MIMO-OFDM frameworks are quickly presented. Different input–multiple-yield frameworks give an extremely swearing up and down to means to build the(More)