Orthogonal signals - Study guides, Class notes & Summaries

ROC 3 FINAL Exam 2023 with Correct Solutions Graded 100% Which organization regulates the use of wireless local area network (WLAN) devices in the United States? *** The Federal Communications Commission (FCC). Which of the following Institute of Electrical and Electronics Engineers (IEEE) 802.11 wireless local area network (WLAN) standards specifies both spread spectrum radio frequency (RF) and infrared (IR) transmission technologies? *** 802.11 Why has it become cost-effective for ent...

Which was the first version of the Data Over Cable Service Interface Specification (DOCSIS) that enabled multiple downstream and upstream channels to be used to transport data to and from a single modem? - ANSWER Docsis 3.0 Which generation of wireless access technology is operation in the millimeter frequency band around 30 GHz being considered? - ANSWER 5G Which is the only 802.11 series of standards that operate at 900 MHz for reliable, slower-throughput connectivity with Internet of Th...

What is PCA? (5 key points) Principal Component Analysis is a statistical technique used for dimensionality reduction, crucial when dealing with high-dimensional data in machine learning. It works by transforming original variables into new ones, called principal components, which are linear combinations of the original variables. Key Points: 1. Principal Components: Principal components are the directions in the data that maximize variance. The first principal component captures the most...

What is the fundamental requirement of OFDM? It has orthogonality. The frequency spacing is 1/T which leads the signal to be orthogonal. If the bit time of the carrier is T, then the base frequency must be chosen to be a multiple of 1/T. OFDM Multiple carrier signals at different frequencies that send some bits on each channel. OFDMA Like OFDM, except that it is a multi-user version. Multiple access is achieved by assigning subsets of subcarriers to individual users. SC-F...

This converter converts the numbers stored in memory to proportional voltages that control the brightness on a CRT monitor CORRECT ANSWERS: Digital to Analog Converter The Digital Scan Converter is AKA: CORRECT ANSWERS: Image Memory This is where images are stored in the ultrasound system: CORRECT ANSWERS: Scan Converter The system component which is most responsible for transmit focusing: CORRECT ANSWERS: Beam Former The process of filling in the empty spaces between scan lines:...

CISSP Official ISC2 practice tests (Questions and Correct Answers A+ Graded 100% Verified) 1. What important factor listed below differentiates Frame Relay from X.25? A. Frame Relay supports multiple PVCs over a single WAN carrier connection. B. Frame Relay is a cell-switching technology instead of a packet-switching technology like X.25. C. Frame Relay does not provide a Committed Information Rate (CIR). D. Frame Relay only requires a DTE on the provider side. CORRECT ANSWER: A. F...

Magnetic Resonance Imaging (MRI) Questions and Answers 2023 MRI - Provide high resolution anatomic structure (as with X-ray CT) - Provide high contrast between different soft tissue (X-ray CT cannot) - No exposure to radiation and hence safe - More complicated instrumentation - Takes longer to acquire scan than CT, more susceptible to patient motion MRI components 1. primary magnet 2. gradient magnets 3. radiofrequency coils 4. scanner 5. computer system 6. patient table ...

system technician conventional Exam guide 2023 with complete solution Discussing modulation In a hybrid fiber/coax (HFC) network what type of crude amplitude modulation (AM) detector causes common path distortion (CPD)? envelope detector What are the peaks and minima of the amplitude modulation (AM) waveform envelope related to The amplitude of the modulation signal. What geometric shape is a sine wave based upon? A right degree triangle What are the three elements of a carrier wave th...

COM3704 EXAM PACK 2023 The use of ________ encryption creates a secure VPN. a. tunneled b. covered c. buried d. routed Which of of the following is emerging as the WAN Link-layer implementation of choice? a. MPLS b. ATM c. PPP d. Frame Relay e. Ethernet In wireless communication, the term ISM stands for: a. industrial, scientific and medical b. integrity, solidarity and method c. insight, sincerity and might d. intelligence, self-confidence and merit Wireless LAN techno...

system technician conventional Exam guide 2023 with complete solution Discussing modulation In a hybrid fiber/coax (HFC) network what type of crude amplitude modulation (AM) detector causes common path distortion (CPD)? envelope detector What are the peaks and minima of the amplitude modulation (AM) waveform envelope related to The amplitude of the modulation signal. What geometric shape is a sine wave based upon? A right degree triangle What are the three elements of a carrier wave th...