A network architect is replacing an old wireless implementation based on 802.

A network architect is replacing an old wireless implementation based on 802.11 a with a new wireless solution. The company has a lot of money invested in legacy wireless barcode scanners and will not be replacing them. However, the bandwidth that the company expects each AP to have less than 700 Mbps in bandwidth, and this is not expected to change in the future.

Which wireless solution would best meet this company's needs and be the most cost-effective?