With the development of intelligent terminals and Internet

the Wireless Local-Aarea Networks（WLAN）are becoming more and more popular worldwide

and have been the most-widely used broadband wireless access technology.The further development of WLAN technology is facing three problems in coverage

interference

and maintenance.The three problems can be effectively solved by combining WLAN and Radio-over-Fiber（ROF）technologies.Nevertheless

in the new-generation WLAN standards

2.4 and 5 GHz two operating frequency-bands are defined

and advanced Multi-Input Multi-Output（MIMO）technique is adopted.In addition

IEEE 802.11 n/ac standards significantly enhance the network throughput.All these new features pose stringent requirements and challenges.In this paper

our recent works are reviewed in threes aspects:digital nonlinear compensation in multi-band ROF systems

single-fiber transmission of wireless MIMO signals

and modeling in WLAN throughput performance.