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However, the design of the optimum beam\u2010vector for each user to minimise interference from other users is challenging. In this paper, based on the concept of signal\u2010to\u2010leakage plus noise ratio (SLNR), we analyze the ergodic sum\u2010rate capacity using statistical Eigen\u2010mode (SE) and zero\u2010forcing (ZF) models with Ricean fading channel. In the analysis, the orthogonality of channel vectors between users is assumed to guarantee interference cancelation from other cochannel users. The impact of the number of antenna elements on the achievable sum\u2010rate capacity obtained by dirty paper coding (DPC) method considered as a nonlinear scheme for approximating average system capacity is studied. A power iterative precoding scheme that iteratively finds the most dominant eigenvector (optimum weight vector) for minimising cochannel interference (CCI), that is, maximising the SLNR for all users simultaneously, is designed resulting in enhancement of average system capacity. The average system capacities achieved by the proposed power iterative technique in this study compared with the singular value decomposition (SVD) method are in the ranges of 5\u201311\u2009bps\/Hz and 1\u20136\u2009bps\/Hz, respectively. Therefore, the proposed power iterative method achieves higher performance than the SVD regarding achievable sum\u2010rate capacity.<\/jats:p>","DOI":"10.1155\/2018\/7138232","type":"journal-article","created":{"date-parts":[[2018,5,22]],"date-time":"2018-05-22T23:34:06Z","timestamp":1527032046000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["MU\u2010MIMO Downlink Capacity Analysis and Optimum Code Weight Vector Design for 5G Big Data Massive Antenna Millimeter Wave Communication"],"prefix":"10.1155","volume":"2018","author":[{"given":"Adam Mohamed Ahmed","family":"Abdo","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9421-4795","authenticated-orcid":false,"given":"Xiongwen","family":"Zhao","sequence":"additional","affiliation":[]},{"given":"Rui","family":"Zhang","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3344-4463","authenticated-orcid":false,"given":"Zhenyu","family":"Zhou","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6492-3846","authenticated-orcid":false,"given":"Jianhua","family":"Zhang","sequence":"additional","affiliation":[]},{"given":"Yu","family":"Zhang","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8202-6604","authenticated-orcid":false,"given":"Imran","family":"Memon","sequence":"additional","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2018,5,22]]},"reference":[{"key":"e_1_2_10_1_2","doi-asserted-by":"crossref","unstructured":"IslamM. 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