Patent ID: 9172498
Filing Date: 2015-10-27
Classification: H04B,H04L

Abstract:
1. A transmitter comprising: a noise signal generator configured to receive multiple noise settings and output multiple noise signals corresponding to the multiple noise settings; and a summing element configured to receive a transmit data signal and the multiple noise signals, sum one or more of the multiple noise signals with the transmit data signal, and output a sum signal, wherein the noise signal generator comprises a pseudo-random binary sequence (PRBS) generator with an adjustable phase, wherein output of the noise signal generator and the transmit data signal are discrete-time symbols summed by the summing element, which is a digital summing element, and wherein the transmitter further comprises: a gain element configured to adjust an amplitude of the sum signal; a finite impulse response (FIR) filter configured to filter the transmit data signal; and an analog summing element configured to generate a second sum signal as a sum of at least one output from the FIR filter and the output of the gain element, wherein the transmit driver is configured to receive the second sum signal.