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Resource Allocation for Outdoor-to-Indoor Compress-and-Forward SUDAS with Independent Relay Processing

: Krishnamoorthy, A.; Schobery, R.; Breiling, M.


Institute of Electrical and Electronics Engineers -IEEE-:
IEEE 86th Vehicular Technology Conference, VTC Fall 2017. Proceedings : Toronto, Canada, 24–27 September 2017
Piscataway, NJ: IEEE, 2017
ISBN: 978-1-5090-5935-5
ISBN: 978-1-5090-5934-8
ISBN: 978-1-5090-5936-2
Vehicular Technology Conference (VTC Fall) <86, 2017, Toronto>
Conference Paper
Fraunhofer IIS ()

In this paper, we consider resource allocation for an outdoor-to-indoor shared user-equipment (UE)- side distributed antenna system (SUDAS) employing multiple independently operating compress-and- forward (CF) relays which utilize both licensed and unlicensed frequency bands to enhance indoor data throughput. First, a non-convex matrix-valued resource allocation problem for maximization of the weighted sum rate is formulated. Next, the non-convex problem is simplified to obtain a low- complexity suboptimal resource allocation algorithm based on sequential quadratic programming (SQP). The proposed algorithm is shown to provide excellent performance in practical scenarios. Furthermore, the algorithm has a low channel state information (CSI) feedback requirement and can accommodate arbitrary communication bands and technologies for indoor relaying. Therefore, the proposed CF-SUDAS scheme can help achieve high outdoor-to-indoor data throughput at low complexity, a crucial requirement for next generation wireless communication systems.