Opportunistic 40 MHz Mode of Transmission in Wireless Transmitters

A system comprising:

• a physical layer module configured to
• communicate with a communication channel including (i) a first sub-channel and (ii) a second sub-channel,
• generate a first signal indicating a clear channel assessment for the first sub-channel of the communication channel, and
• generate a second signal indicating a clear channel assessment for the second sub-channel of the communication channel;
• a signal processing module configured to generate a third signal by increasing a pulse width of the second signal by a predetermined period of time;
• and
• a control module configured to determine whether to transmit data in a first mode, a second mode, or a third mode based on (i) the first signal, (ii) the second signal, and (iii) the third signal, wherein
• in the first mode, the control module is configured to transmit data via the communication channel based on the first signal,
• in the second mode, the control module is configured to transmit data via the communication channel based on (i) the first signal and (ii) the second signal, and
• in the third mode, the control module is configured to transmit data via (i) the first sub-channel or (ii) the communication channel based on (i) the first signal and (ii) the third signal.