WIRELESS COMMUNICATION UNIT-5

What is a key feature of 4G technology?

• Multicarrier modulation

• Single-carrier frequency division

• Frequency modulation

• Time division multiplexing

Which of the following is a challenge associated with 4G networks?

• Reduced data rates

• Spectrum efficiency

• Backward compatibility

• Increased latency

What is one of the applications of 4G technology?

• Analog voice transmission

• Multicasting services

• Low-speed data control

• High-definition video streaming

Smart antenna techniques are used in 4G networks to:

• Reduce battery consumption

• Enhance signal strength

• Increase data transmission speed

• Improve signal directionality and range

OFDM stands for:

• Optical Frequency Division Multiplexing

• Orthogonal Frequency Division Multiplexing

• Oscillatory Frequency Division Modulation

• Ordered Frequency Division Multiplexing

MIMO technology in 4G networks refers to:

• Modulation and Input, Modulation and Output

• Multiple Input, Multiple Output

• Multiplexing Interface, Modulation Output

• Multiple Input, Modulation Only

Adaptive modulation and coding in 4G is used to:

• Stabilize the network frequency

• Adjust to varying channel conditions

• Decrease the data transfer rates

• Standardize the coding schemes

What does SDR stand for in the context of 4G technologies?

• Software Defined Radio

• System Dynamic Range

• Standard Data Rate

• Secure Data Reception

The concept of 4G vision encompasses:

• Only voice services

• High mobility and high-speed data services

• Basic text messaging

• Low-speed internet browsing

Multicarrier modulation in 4G networks is advantageous because:

• It allows for a single frequency to be used

• It supports high data rate transmission

• It works only with line of sight

• It is easier to implement than single-carrier systems