Transmitter Channel Interference Cancellation via Digital Signal Processing

The patent replaces physical isolation mechanisms (space shielding, screws, conductive adhesive tape) with a digital signal processing system. The cancellation processing unit generates cancellation signals through digital pre-distortion and signal combination to eliminate interference between transmission channels, substituting mechanical/physical isolation with electronic/software-based interference cancellation.

The patent changes the approach from physical parameter modification (increasing space size, adding physical barriers) to signal parameter modification. By adjusting digital signal parameters (pre-distortion coefficients, cancellation signal amplitudes and phases) to counteract interference, the system achieves interference elimination without altering physical dimensions or adding physical isolation elements.

The patent substitutes physical spacing requirements with digital signal processing. Instead of increasing the physical distance between transmission channels to reduce coupling and interference, the system uses cancellation processing units to generate anti-phase signals that actively cancel interference, allowing channels to be placed closer together without compromising isolation performance.

The patent transitions from solving the interference problem in the spatial dimension (increasing physical distance) to solving it in the signal dimension (time and frequency domain processing). By operating on signals in the digital domain before conversion to analog, the system eliminates interference without requiring additional spatial separation between channels.