IEEE 802.11a-1999 or 802.11a was an amendment to the IEEE 802.11 wireless local network specifications that defined requirements for an orthogonal frequency division multiplexing (OFDM) communication system. It was originally designed to support wire

4 Spatial processing, power control, and channel allocation for OFDM wireless communications.pdf

5 System design and signal processing for OFDM-based wireless communication systems.pdf