18 Questions
What are the two main techniques used in MIMO systems to improve performance?
Diversity and Multiplexing
How does spatial diversity work in MIMO systems?
Same information is transmitted by different antennas
Explain spatial multiplexing in MIMO systems.
Information is divided into a number of streams transmitted by different antennas
What is the result of the capacity of a MIMO system according to the formula provided?
Capacity = log2(1 + SINR)
What is the main advantage of MIMO systems?
Takes advantage of Multipath propagation
How does the capacity of a MIMO link change with different numbers of transmit and receive antennas?
Capacity generally increases with more antennas
What are the major challenges faced by hospital IT in smart hospitals?
Managing and securing the exchange of data among connected devices.
How do proximity services facilitate real-time data exchange in IoT ecosystems?
By enabling real-time data exchange in the context of advertisement, multiplayer gaming, broadcasting, service discovery, etc.
Why is cooperation important in D2D communication for ubiquitous computing?
Due to device power constraints and security, especially for multihop communication with optimal routing.
What is a key feature of the IoT ecosystem in terms of ubiquitous computing?
Ubiquitous computing among several devices.
How do heterogeneous RFID readers connected with cloud radio access networks enhance IoT ecosystems?
By allowing real-time services based on personal interest and activities.
What is the primary function of intelligent transportation systems in vehicle-to-vehicle communication?
To collect, evaluate, and act upon huge data traffic from multiple nodes efficiently and reliably.
What is the purpose of Successive Interference Cancellation (SIC) in communication systems?
To decode the strongest signal first and subtract it from the received signal to obtain the waveform with the rest of the signals accurately.
How does Non-Orthogonal Multiple Access (NOMA) serve users with different channel conditions?
Users with better channel conditions receive less power in NOMA.
What is the significance of using Successive Interference Cancellation (SIC) at receivers in communication systems?
SIC helps in canceling interference from other signals, improving the decoding process.
What frequency ranges do Millimeter Wave (mmWave) communication systems typically operate in?
Millimeter wave systems operate in frequency ranges between 24 and 300 GHz.
How does Power Splitting factor affect the rates of users in NOMA systems?
The Power Splitting factor in NOMA systems impacts the rates of users by dividing the total power among users based on a factor.
What is the main difference between NOMA and OFDMA in terms of resource allocation?
NOMA allocates power differentially based on user channels, while OFDMA splits the bandwidth equally among users.
Explore the challenges faced by hospital IT in managing and securing the exchange of data among numerous connected devices in a smart hospital setting. Learn about proximity services and how they enable real-time data exchange for various applications scenarios.
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