Research Article
Co-Primary Spectrum Sharing with Resource Allocation in Small Cell Network
@INPROCEEDINGS{10.4108/icst.5gu.2014.258108, author={Tachporn Sanguanpuak and Nandana Rajatheva and Matti Latva-aho}, title={Co-Primary Spectrum Sharing with Resource Allocation in Small Cell Network}, proceedings={1st International Conference on 5G for Ubiquitous Connectivity}, publisher={IEEE}, proceedings_a={5GU}, year={2014}, month={12}, keywords={spectrum sharing resource allocation zero-forcing precoder multiple-input-single-output (miso)}, doi={10.4108/icst.5gu.2014.258108} }- Tachporn Sanguanpuak
Nandana Rajatheva
Matti Latva-aho
Year: 2014
Co-Primary Spectrum Sharing with Resource Allocation in Small Cell Network
5GU
IEEE
DOI: 10.4108/icst.5gu.2014.258108
Abstract
We study co-primary spectrum sharing concept in small cell multiuser networks. Downlink transmission is considered with Rayleigh fading in interfering broadcast channel. Multiple-input-single-output (MISO) system is considered in two small cells. The sum rate maximization problem is studied in two cells having multiple users with multiple subcarriers. Zeroforcing (ZF) precoders are considered at both base stations. The problem becomes non-convex then and we factor the main objective problem into two subproblems. First subproblem is multiuser with subcarriers allocation where we assume that each subcarrier can be allocated to multiple users. Gale-Shapley algorithm is proposed for subcarrier allocation problem. Second subproblem is where ZF precoders are employed at both base stations for allocating power. It leads to water-filling based power allocation for both base stations.