Patent ID: 8274885
Filing Date: 2012-09-25
Classification: H04L,H04W

Abstract:
1. A method of transmitting user data within a very-high frequency/ultra-high frequency (VHF/UHF) band, over a local area network (LAN), comprising: identifying in the VHF/UHF band a whitespace band B generating a baseband WiFi orthogonal frequency division multiplexing (OFDM) signal from user data; reconfiguring the baseband WiFi OFDM signal into a modified WiFi OFDM signal using a transmit spectrum mask adapted to confine the bandwidth of the modified WiFi OFDM signal into the whitespace band, and adapted to attenuate the modified WiFi OFDM signal at the edges of the whitespace band for maintaining a performance of any neighboring TV channel unchanged; and transmitting the modified WiFi OFDM signal over the whitespace band.