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In this paper, we consider signal transmission by means of multiuser beamforming in the wireless backhaul link. We generate the beam weight in an eigen-direction of weighted combination of short- and long-term channel information of the backhaul link. The beam weight can maximize the average signal-to-leakage-plus-noise ratio (SLNR), while providing the transmission robust to SMC mobility. We analyze the performance of the proposed scheme in terms of the average signal-to-interference-plus-noise ratio (SINR) and optimize the transmit power by iterative water-filling. Finally, we verify the performance of the proposed scheme by computer simulation.<\/jats:p>","DOI":"10.1186\/s13638-019-1551-9","type":"journal-article","created":{"date-parts":[[2019,10,25]],"date-time":"2019-10-25T17:13:10Z","timestamp":1572023590000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Transmission of wireless backhaul signal in a cellular system with small moving cells"],"prefix":"10.1186","volume":"2019","author":[{"given":"Hyoung-Keon","family":"Kim","sequence":"first","affiliation":[]},{"given":"Yong-Suk","family":"Byun","sequence":"additional","affiliation":[]},{"given":"Geon-Woong","family":"Jung","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8537-384X","authenticated-orcid":false,"given":"Yong-Hwan","family":"Lee","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2019,10,24]]},"reference":[{"issue":"5","key":"1551_CR1","doi-asserted-by":"publisher","first-page":"36","DOI":"10.1109\/MSP.2007.904815","volume":"24","author":"D. 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