By Kazi Mohammed Saidul Huq, Visit Amazon's Jonathan Rodriguez Page, search results, Learn about Author Central, Jonathan Rodriguez,
The new common use of cellular web including the appearance of diverse shrewdpermanent functions has ended in the explosive progress of the cellular facts site visitors within the previous couple of years. This momentum of cellular site visitors will proceed a result of rising wishes of connecting humans, machines, and functions via cellular infrastructure. therefore, the present and projected dramatic development of cellular facts site visitors necessitates the improvement of fifth-generation (5G) cellular communications expertise. for that reason, there's major curiosity within the improvement of cutting edge backhaul and fronthaul suggestions for ultra-dense heterogeneous networks.
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Extra resources for Backhauling/Fronthauling for Future Wireless Systems
30 Backhauling/Fronthauling for Future Wireless Systems requirements of the users. Even though the existing wired backhaul ensures high reliability, it may not be an economical and ascendable solution for densely deployed SBSs. On the other hand, wireless backhauling solutions are cost‐efficient as well as easily scalable to provide connectivity to small cells. Reasons include the possibility of frequency reuse, easy operation and management and increased flexibility of backhaul resource allocation.
The primary types of interference in a massive MIMO system include the following: •• Pilot contamination: In a massive MIMO system, orthogonal pilot sequences are typically used to train the massive MIMO BSs via uplink transmissions of the users. Due to uplink–downlink reciprocity in a time‐division duplex (TDD) 34 Backhauling/Fronthauling for Future Wireless Systems massive MIMO system, the estimated channel information in the uplink is exploited for the downlink transmissions. Note that the fundamental limitation of the massive MIMO BSs arises from the reuse of pilot sequences in the neighbouring BSs, that is, transmissions of users in the neighbouring cells on the same pilot sequence.
To achieve this optimal performance, a TDM‐based joint scheduling and routing algorithm is implemented where the link parameters are updated in real time. The joint scheduling of transmission over access and backhaul links using mmWave frequency maximizes the spatial reuse while managing the intra‐cell and inter‐cell interference efficiently . In addition to the densely deployed SBSs, the density of the wireless devices can also be very high in a 5G network. For such a scenario, the centralized MAC scheduling algorithm proposed in  suggests enabling direct device‐to‐device (D2D) transmission for optimal path selection and concurrent transmission scheduling over the access link and backhaul links.
Backhauling/Fronthauling for Future Wireless Systems by Kazi Mohammed Saidul Huq, Visit Amazon's Jonathan Rodriguez Page, search results, Learn about Author Central, Jonathan Rodriguez,