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9.4 Positioning

9 OFDMA module

See section ‎7.5, common to CDMA and OFDMA on the positioning of BSs and MSs.

9.5 Link-to-system level mapping

9 OFDMA module

A look up table is used to map throughput in terms of spectral efficiency (bps per Hz) with respect to calculated SINR (= C/(I+N)) (dB) level. This link level data (bitrate mapping) is user selectable and can be modified depending on the simulation to perform....

9.6 Achieved bit rate

9 OFDMA module

The achieved bit rate is calculated as follows:  (Eq. 45) The achieved aggregate bit rate is calculated over all the mobiles connected to the reference cell.

9.7 DL C/I calculation

9 OFDMA module

The relationship between the contributors of the interference in a OFDMA network is illustrated in Figure 205. Figure 205: Illustration of the interference mechanism in the OFDMA module     Figure 205 illustrates the interference mechanism in the O...

9.7 DL C/I calculation

9 OFDMA module

The relationship between the contributors of the interference in a OFDMA network is illustrated in Figure 205. Figure 205: Illustration of the interference mechanism in the OFDMA module   Figure 205 illustrates the interference mechanism in the OFDM...

9.8 UL C/I calculation

9 OFDMA module

The C/I calculation in UL is calculated so that C(j,k) is the received power from the UEj,k at the j-th BS.                                    (Eq. 54) where Pt is the transmit power of the UE in dBm (see UL Power control below) and effective_pathloss is defin...

9.9 UL calculation of the UE frequencies

9 OFDMA module

The frequency of the UE in UL is calculated as follow (Eq. 61) with Diff taking into account for any difference between the BWsystem and the effective bandwidth ( ) so that (Eq. 62) where FUE: Centre frequency of the UE; Fsystem: Frequency of the syst...

9.10 OFDMA UL power control

9 OFDMA module

In OFDMA UL, the power control is applied to the active users (i.e. the mobile users with specific RBs) so that the UE Tx power is adjusted with respect to the effective path loss (i.e. based on the MCL) to the BS it is connected to. In 3GPP ‎[12], the UL powe...

9.11 Pathloss Correlation

9 OFDMA module

The concept of a simple correlation model for shadow fading has been widely adopted in LTE co-existence studies mostly employed in uplink case. The propagation attenuation is modelled as the product of the path loss and the shadow fading. The shadow fading is ...

9a IMT-2020 MODULE

INTRODUCTION

9a IMT-2020 MODULE

'IMT-2020', better known as 5G, is implemented in SEAMCAT according to the specifications outlined in Recommendation ITU-R M.2101 – 'Modelling and simulation of IMT networks and systems for use in sharing and compatibility studies' \[ref\].The SEAMCAT implemen...

IMT-2020 SYSTEM TYPES

9a IMT-2020 MODULE

There are two different types of network structure: Homogeneous networks and Heterogeneous networks. A homogeneous network structure consists of a single base station type. It can be a macro, a micro or an indoor base station. A heterogeneous network structure...

IMT-2020 TX AND RX SETTINGS

9a IMT-2020 MODULE

IMT-2020 system tab has similar interface as OFDMA system as explained in section 9.3. 

ALGORITHM DESCRIPTION

9a IMT-2020 MODULE

The simulation algorithm is implemented according to the specification outlined in Rec. ITU-R M.2101 – section 3.4.1 for downlink and section 3.4.2 for uplink. This implementation addresses both cases of IMT-2020 as the interfering and victim system.Flowcharts...

BEAMFORMING ANTENNAS IN IMT-2020 SYSTEMS

9a IMT-2020 MODULE

Introduction A key. feature of IMT-2020 systems are beamforming array antennas which use phase shifting to an array of individually fed antenna elements to dynamically steer a beam towards a specific user in order to maximise throughput. The main beamforming a...

Beamforming Subarray Active Antenna Systems

9a IMT-2020 MODULE

Active Antenna System Active Antenna System are described in Recommendation ITU-R M.2101 and the extended sub-array AAS model with suggested parameters in ITU-R Working Party 5D Chairman's Report in Chapter 4 Annex 4.4 ITU-R WP5D document 5D/716 "Characteristi...

POSITIONING

9a IMT-2020 MODULE

In Section 7.5. of this Handbook it is explained cellular network positioning of BSs and MSs which is applicable also to IMT-2020 systems in general. In addition to cellular positioning mentioned above, for Hybrid system consisting of combination of Macro and ...

LINK-TO-SYSTEM LEVEL MAPPING

9a IMT-2020 MODULE

A look up table is used to map throughput in terms of spectral efficiency (bps per Hz) with respect to calculated SINR (= C/(I+N)) (dB) level. Bitrate mapping is connecting radio link quality parameter of SINR to data rates which is then considered in bitrate ...