Cooperative interference cancellation for wireless networks

A typical military airborne networking scenario involves small groups of relatively closely-spaced aircraft which fly as a unit to perform a common mission. These aircraft need to maintain very long data links with other aircraft in the presence of strong interference from hostile jammers. Due to the physical separation of the aircraft, the time difference of arrival can often be greater than the chip rate of the desired signal, allowing multiple aircraft to perform interference cancellation to greatly increase their resistance to jamming. In this paper, the performance of a zigzag-like algorithm is simulated and compared against single receiver performance in the presence of strong interference. Performance of these algorithms in the presence of strong interference is shown for both uncoded and coded transmissions, which effectively mitigate strong interference with only 0.5 dB of performance loss compared to the unjammed case regardless of the jammer strength.