American Tower's growth headwinds should fade next year.American Tower (AMT 0.03%) has encountered a few speedbumps over the past year, which has slowed its growth. As a result, the infrastructure-focused real estate investment trust (REIT) hasn't been able to increase its dividend. That's a notable departure for a company that had delivered more than 20% annual dividend growth since 2013. The infrastructure REIT's headwinds are masking the unabated demand it's seeing for communications and data infrastruct ...