Abstract
The fifth generation (5G) New Radio (NR) has been developed to provide significant improvements in scalability, flexibility, and efficiency in terms of power usage and spectrum as well. To meet the 5G vision, service and performance requirements, various candidate technologies have been proposed in 5G new radio; some are extensions of 4G and, some are developed explicitly for 5G. These candidate technologies include non-Orthogonal Multiple Access (NOMA), and Low Density Parity Check (LDPC) channel coding. In addition, deploying software defined radio (SDR) instead of traditional hardware modules. In this paper we build an open source SDR-based platform to realize the transceiver of the physical downlink shared channel (PDSCH) of 5G NR according to Third Generation Partnership Project (3GPP) standard. We provide a prototype for pairing between two 5G users using NOMA technique. In addition, a suitable design for LDPC channel coding is performed. The intermediate stage of segmentation, rate matching and interleaving are also carried out in order to realize a standard NR frame. Finally, experiments are carried out in both simulation and real time scenario on the designed 5G NR for the purpose of system performance evaluation, and to demonstrate its potential in meeting future 5G mobile network challenges.
Highlights
With the demanding requirements being placed upon the new fifth generation (5G) mobile communications standard, a totally new radio interface and radio access network has been developed
In this paper we build an open source software defined radio (SDR)-based platform to realize the transceiver of the physical downlink shared channel (PDSCH) of 5G New Radio (NR) according to Third Generation Partnership Project (3GPP) standard
The development of the 5G NR or 5G New Radio is the way to enable the 5G mobile network to work and it provides a number of significant advantages when compared to fourth generation (4G)
Summary
With the demanding requirements being placed upon the new fifth generation (5G) mobile communications standard, a totally new radio interface and radio access network has been developed. The number of supported users is limited by the number of available orthogonal resources in OMA Another problem is that, despite the use of orthogonal time-, frequency- or code-domain resources, the channel-induced impairments almost invariably destroy their orthogonality. The basic goal for non-orthogonal multiple access (NOMA) is to support more users than the available resources (time- frequency- code-domains). This increase in users over resources by Non-orthogonal multiple access is adopted by the ultimate cost at receiver complexity due to requirement for separting the non-orthogonal signal. The proposed system provides a prototype for pairing between two 5G users using NOMA technique It gives a suitable design for LDPC channel coding.
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