COMMUNICATION SYSTEMS BASED ON HIGH-GAIN SIGNALING

摘要

Systems, methods and apparatus for transferring data at a high rate. Examples may provide transmitters and receivers that transfer data at a high rate by encoding the data to be transmitted such that the circuits of the transmitter and receiver operate in their high-gain states. The encoded signal may have an average value that is independent of the data that is conveyed by the transmitted signal. In other examples, the encoding may shape the data signal into a data signal having a high-pass characteristic. When the high-pass encoded signal is transmitted through a channel having a low-pass transfer function, the resulting output signal may have much lower ISI compared to a un-encoded input signal. Transmit and receive circuits, such as amplifiers, laser, and photo-diodes, are biased to operate in their high-gain regions when receiving the encoded data in order to provide high-bandwidth and shorter transition times.

主权项

1. A transmitter comprising:
an encoder having at least one input adapted to receive a data signal, the encoder capable of encoding the data signal into an encoded multi-level data signal having substantially reduced DC and low-frequency components; and an output stage coupled to receive the encoded multi-level data signal and to transmit the encoded multi-level data signal, wherein the output stage is configured to have a transfer function that includes a high-gain linear region, and wherein the output stage is conditioned to operate at least substantially in the high-gain linear region when receiving and transmitting the encoded multi-level data signal.