In early tests, it has set new records for spectrum efficiency, which is a measure of how many bits of data can be transmitted to a certain number of users per second. Massive MIMO looks very promising for the future of 5G. … That’s why 5G stations must incorporate beamforming.
What does the spectrum efficiency measure?
Spectral efficiency, spectrum efficiency or bandwidth efficiency refers to the information rate that can be transmitted over a given bandwidth in a specific communication system.
Which technique can provide support for enhancing spectral efficiency in LTE and 5G?
Orthogonal Frequency Division Multiplexing (OFDM) is an erudite modulation method used for wired and wireless communications systems due to its high spectral efficiency and immune to multipath fading. OFDM is widely used in 4G-LTE, DSL, Wi-Fi, WLAN  .
What measures spectrum efficiency of a wireless system?
Explanation: Radio capacity is a parameter which measures spectrum efficiency of a wireless system. … Explanation: In a cellular system, the interference at a base station receiver will come from the subscriber units in the surrounding cells. This is called reverse channel interference.
Which modulation is the most efficient one?
Which modulation is the most efficient one? Explanation: Of all the modulation showed, QAM is the most bandwidth efficient one.
What is meant by bandwidth efficiency?
1. It can be defined as the effective and useful use of every Hertz of frequency available for communication. In radio communication, bandwidth efficiency is essential as the available spectrum for communication is very limited.
What does the DC subcarrier indicate?
What does the DC subcarrier indicate? Explanation: All the subcarriers of an OFDM symbol do not carry useful data. In OFDM and OFDMA PHY layers, the DC subcarrier is the subcarrier whose frequency is equal to the RF centre frequency of the transmitting station.
What is the condition of handoff?
Explanation: Handoff occurs when a mobile moves into a different cell while a conversation is in progress. The MSC automatically transfers the call to a new channel belonging to the new base station.
What is LTE spectral efficiency?
The spectral efficiency is generally defined by the transmission data rates divided by the channel bandwidth and expressed in bits per second, per Hz (bps/Hz). It is also called as normalized throughput. … Normalized uplink throughput with an AMC in LTE.
What is the spectral efficiency of QPSK?
With rate ½ coding, a BPSK system will have a spectral efficiency ranging from 0.35 to 0.45. Similarly, a QPSK system with rate ½ coding will also have a spectral efficieny below 1. To achieve a spectral efficiency above 1 with channel coding will require complex modulation orders of 3 and above.