Patent ID: 8149950

Claim:
A method of reducing adjacent channel power ratio and compensating memory effects of multi-channel wideband communication systems using multiplexing modulation techniques comprising the steps of generating an address from samples of a baseband input signal of a communication system; retrieving from a memoryless lookup table an entry in accordance with the address; pre-equalizing the baseband input signal using the following equation: z ⁡ ( n ) = ∑ k = 0 K - 1 ⁢ W k m ⁡ (  u ⁡ ( n )  ) · x ⁡ ( n - k ) == ∑ k = 0 K - 1 ⁢ W k m ⁡ (  u ⁡ ( n )  ) · u ⁡ ( n - k ) · F m ⁡ (  u ⁡ ( n - k )  ) , wherein W k m (|u(n)|) is the k-th tap and m-th indexed coefficient corresponding to the magnitude of the input signal, u(n); and multiplying the pre-equalized baseband input signal and the lookup table entry.