5G small cell optimized radio design

Abstract

The 5 th generation (5G) of mobile radio access technologies is expected to become available for commercial launch around 2020. In this paper, we present our envisioned 5G system design optimized for small cell deployment taking a clean slate approach, i.e. removing most compatibility constraints with the previous generations of mobile radio access technologies. This paper mainly covers the physical layer aspects of the 5G concept design.I.

A Flexible Frame Structure for 5G Wide Area

“…For example, the Physical Downlink Control Channel (PDCCH) is transmitted over the full system bandwidth in the first OFDM symbols of the subframe, having a fixed duration of 1ms. Time separation of the control and data plane has also been suggested for the recently proposed 5G small cells concept optimized for TDD mode [4].…”

“…As will be d Section IV, the selection of ∆ relative control overhead. N concept presented in [4] propos …”

“…Among others, the METIS project has outlined its 5G vision in [1], the 5GNOW project presented their proposal in [2], while the use of more advanced centralized network architectures for 5G has been suggested in [3]. Furthermore, small cell optimized design has been identified as being of particular importance for a new 5G air interface to be able to meet the future mobile broad band traffic requirements [4]- [5].…”

5G – Wireless Communications for 2020

“…The Flexible TDD technique has been studied as a solution to this problem [60], allowing the cell to decide instantly, which subframes should be assigned to downlink or uplink. Different frame proposals have been made, for instance in [61]- [63], but most rely on very short frames, of less than 0.5 ms, that can be assigned either to uplink or to downlink. Differently from LTE, the signalling and data fields in these frame proposals are likely to be separated in time domain, allowing the receiver to switch off when no data in addressed to it, saving energy.…”

Implementation of Markov Chain for Advanced Communication in MIMO-OFDM

“…Due to different error performances it is difficult to analyze the number of detectors. In [2], a new clean approach of 5G is proposed for radio access technology which is based on TDD system. For flexible UL/DL, OFDM is used which results into extension of MIMO.…”