Browsing by Author "RACHITHA M R"

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    “Hybrid Beamforming for Massive MU MIMO-OFDM Systems
    (2019-06-14T07:14:42Z) VEDA J; RACHITHA M R; PUNARVA A
    5G networks are envisioned to ease the burden on the current infrastructure by offering significantly higher data rates through increased channel bandwidths.Presently, all wireless technologies are operating in 300MHz to 3 GHz band. Due to the shortage of available frequencies traditionally used for mobile communications, mm-wave bands is an alternative. The key essence of 5G wireless networks lies in exploration of high-frequency mmWave band ranging from 3 GHz to 300 GHz. The large bandwidth available at these frequencies helps to offer data rates that satisfy 5G demands. But the mobile environment at these mm-wave bands is far more complex than at the currently used frequencies. Higher propagation losses that greatly vary depending on the environment require an updated network infrastructure and new hardware concepts. Beamforming antenna arrays will play an important role in 5G implementations because even handsets can accommodate a larger number of antenna elements at mm-wave frequencies. Apart from a higher directive gain, these antenna types offer complex beamforming capabilities. Millimeter-wave bands potentially enable high bandwidths. To limit the use of these high frequencies is a result of adverse propagation effects in particular due to obstacles in the LoS.