Phase shift keying: 5G technology implements quadrature phase shift keying, QPSK as the lowest order modulation format. Although this will provide the slowest data throughput it will also provide the most robust link and as such it can be used when signal levels are low or when interference is high.
Read moreWhy is CP-OFDM used in 5G?
5G NR CP-OFDM chain It is intended for MIMO (Multiple Input Multiple Output). They are like Gold sequences as used in PDSCH. CP-OFDM offers very high spectral packing efficiency in RBs (Resource blocks). It is employed when network operators need to maximize network capacity in dense urban environments .
Read moreIs OFDM used in 4G?
LTE uses OFDM as the basic signal format – OFDMA in the downlink and SC-FDMA in the uplink with various modulation formats. OFDM forms the basic signal format used within 4G LTE .
Read moreWhere is OFDM used?
Orthogonal frequency division multiplexing (OFDM) is a modulation technique that is used in several applications ranging from cellular systems (3GLTE, WiMAX), wireless local area networks (LANs), digital audio radio, underwater communications, and even optical light modulation .
Read moreHow are resource blocks allocated in LTE?
In LTE, radio resources are divided into time and frequency resource elements. Resource elements in time axis are divided into number of OFDM symbols and in frequency axis are divided into number of sub-carriers . Resource element (RE) is a smallest resource unit, which occupies a single sub-carrier and an OFDM symbol.
Read moreHow are resource blocks calculated?
For 50 Mbls one has to assign x blocks= (50/100.8)x total no. of resource blocks(100)= one has to assign 50 resource blocks, and in case of 60 Mbls the number of assigned RBs= (60/100.8) 100=60. In one second the transmitted bits will be 50Mbits and 60 Mbits respectively.
Read moreWhat is channel bandwidth in LTE?
In 3GPP the channel bandwidth is defined as the occupied bandwidth of a modulated waveform which corresponds to the frequency range containing 99% of the total power of the modulated signal . An LTE-M-U narrowband of 6 PRBs have a 1.4 MHz channel bandwidth according to this definition which is reused by ETSI.
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