Multiple-input multiple-output (MIMO) significantly increases throughput of a communication system by employing multiple antennas at the transmitter and the receiver. To extract maximum performance from a MIMO system, a computationally intensive searched based detector is needed. To meet this challenge, custom designs on ASIC or FPGA are usually used in the receiver. This challenge is compounded by the receiver's need to handle different configurations for typical industrial standards. Graphic processor unit (GPU) is a low-cost parallel programmable co-processor that delivers extremely high computation throughput for many signal processing applications. However, careful architecture aware software design is needed to leverage performance offered by GPU. We propose a novel soft MIMO detection algorithm, multi-pass trellis traversal(MTT), and show we can achieve ASIC/FPGA like performance and handle different configurations in software on GPU. In many wireless systems, a channel decoder such as LDPC is combined with a soft output MIMO detector at the receiver to maximize performance...
Wireless is a methodical account of the early development of wireless telegraphy and the inventors who made it possible. Sungook Hong examines several early significant inventions, including Hertzian waves and optics, the galvanometer, transatlantic signaling, Marconi's secret-box, Fleming's air-blast key and double transformation system, Lodge's syntonic transmitter and receiver, the Edison effect, the thermionic valve, and the audion and continuous wave. Wireless fills the gap created by Hugh Aitken, who described at length the early development of wireless communication, but who did not attempt "to probe the substance and context of scientific and engineering practice in the early years of wireless" (p. x). Sungook Hong seeks to fill this gap by offering an exhaustive analysis of the theoretical and experimental engineering and scientific practices of the early days of wireless; by examining the borderland between science and technology; depicting the transformation of scientific effects into technological artifacts; and showing how the race for scientific and engineering accomplishment fuels the politic of the corporate institution. While the author succeeds in fulfilling these goals, the thesis, it seems, is to affirm Guglielmo Marconi's place in history as the father of wireless telegraphy.
Allison is a 28 year old White Caucasian who is in her first-year doctoral student, doing a practicum at a community agency in a predominantly Latino neighborhood in a large urban area. Allison has a client called Carmen. Carmen is a 19 year-old Puerto Rican. Carmen and her family moved from Puerto Rico when she was 10 years old. Carmen is single, lives with her parents, and attends a nearby community college. For several sessions, Allison and Carmen had been looking on career options that Carmen has after she obtains her associates degree. In one of these sessions, Allison reviewed with Carmen various career options. After each suggestion that Allison gave to Carmen, Carmen would respond that she is interested, but she needs to consult
J. A. Gutierrez ,M. Naeve , E. Callaway , M. Bourgeois ,V. Mitter and B. Heile "IEEE 802.15.4:adeveloping standard for low-power low-cost wireless personal area networks", IEEE Network, vol. 15, no. 5, pp.12 -19 2001
My field of study is Criminal Justice. A new development in this field had been put in place by the FBI this new development is Next Generation Identification system or (NGI) which is what it will be referred to in this essay. NGI is what will be enhancing and/or replacing IAFIS which is the current system used my law enforcement. NGI is a state-of -the-art biometric identification service. NGI is a one point two billion dollar investment by the U.S. federal government. It will take a total of ten years for NGI to be fully activated. NGI is divided into six different stages, which are ten-print processing, RISC, national palm repository and latent searches,facial recognition and Rap Back,Iris recognition, and Tech refresh.
“It used to be that walls have ears, but they also have eyes,” said Stephen Barnhart, owner of Barnhart Security and Alarm Services in Grandview.(Downs, 1 of 4) The United States has 2 million camera surveillance systems, according to an industry estimate, and in downtown Chicago there is an average of 3 cameras per block. More and more governments all around are protecting their public space, with surveillance cameras to catch criminals and scare the people who think about doing the wrong thing. Although they are convenient and in few cases helpful, these cameras display greater risks to privacy. Surveillance and security cameras have become extremely popular, and an invasion of privacy.
Is Cher having problems caused by the natural events in her body, or is someone drugging her and trying to control her. In an exclusive report by Radar online, a source tells the shocking details of someone in Cher’s circle of friends is controlling her by brainwashing and drugging her.
6) Michele Zorzi, “Wireless Sensor and networks: Recent trends and Research Issues’’, University of Padova, Italy, IEEE communication society, Poland, April 28-30, 2008.
In today’s world of advanced computer games, the requirements that computers must meet to run these games are very, very steep ones. A major requirement of almost all high tech computer games is a decent graphics card. With most of the games today being developed in 3-D, unlike the games a decade ago which were almost always 2-D, an advanced graphics card is a must to get any amount of fun from these games. Two companies that are heavyweights in the ring of computer graphics are ATI and NVIDIA.
Long Term Evolution (LTE) products are quickly being seen on the market nowadays and much more products are expected in the future. With 5G proposed and expected to arrive around 2020, engineers must work and test these new products out quickly. However, the complexity of these devices does not make this task an easy one. There are many performance measures to consider such as SNR, SIR, capacity, and many more as well as different features that may be necessary to arrive at the desired results. For purposes of this project, I will evaluate a journal from Agilent Technologies that describes how to quickly determine if a MIMO channel is capable of supporting spatial multiplexing when given a particular signal-to-noise ratio (SNR). The term “condition number” will also be introduced when dealing with recovery of MIMO transmission.
The uses of Digital Signal Processing in communications has become so large scale that nearly any form of analog communication is considered obsolete. Today, nearly any form of communication used, aside from verbal communication, relates to Digital Signal Processing. Some of the more prominent uses for DSP in communications are; local area networks, cell pho...
throughput by transmitting independent data streams on the different transmit branches simultaneously and at the same carrier frequency.
Print. The. Gordon A. Gow, and Richard K. Smith. Mobile and wireless communications: an introduction, McGraw-Hill International, 2006. Print.
First it is important to define the term "3M." The term "3M" simply refers to a script's ability to unlock all of the channels, based on the saying "All for one, and One for all!" from the "3 Musketeers," (which came from the old days of hacking cable boxes where all channels were viewable through one channel). Anyway, "3M" now is just a generic term for a card that has all channels open and no stealth or write protection. In stealth scripts, the "3M" code refers to the actual part of the code that enables the video.All scripts that open all of the channels are 3M's, however most people are referring to scripts that auto-update on their own, when they refer to a 3M. The card auto-updates because it has no commands blocked, and it appears to be a normal subbed card, as much as possible. The EASIEST type of 3M to write is to modify a valid bin file, by editing it in BasicH. Before you can write a script to modify the card, you need to be able to edit a bin file manually to make those changes. If you read through this page carefully you will find everything you need to know to modify a valid bin file with unique jump points and a 3M code. After you are done editing your valid bin file you will have a private 3M that auto-updates, with private jump points. To remove simply do a 1-STEP clean in BasicH or BasicU.
“Cognitive radio is an intelligent wireless communication system that is aware of its surrounding environment (i.e., outside world), and uses the methodology of understanding by- building to learn from the environment and adapt its internal states to statistical variations in the incoming RF stimuli by making corresponding changes in certain operating parameters (e.g., transmit-power, carrier-frequency, and modulation strategy) in real-time, with two primary objectives in mind: highly reliable communication whenever and wherever needed; efficient utilization of the radio spectrum.” [4]
We all use output devices in our normal day to day life, most of us use them a lot more than we may realize now that we are in school. An output device is any processing equipment used to communicate the results of data carried out by a computer or other processing devices which turns information into an easier form for us to read. (Wikipedia).