Multi-standard front end using wideband data converters

摘要

Embodiments provide an area, cost, and power efficient multi-service transceiver architecture. The multi-service transceiver architecture simplifies receiver/transmitter front ends needed for a multi-service architecture, by replacing significant portions of multiple receiver and/or transmitter front ends with a single ADC and/or DAC, respectively. In embodiments, a plurality of received service contents are combined into one composite analog/RF signal and applied to an ADC. The ADC converts the composite signal into a composite multi-service digital signal. Digital techniques are then used to separate the plurality of service contents into a plurality of respective digital streams that each can be independently demodulated. Similarly, in the transmit direction, a plurality of digital streams, including a plurality of service contents, are combined into one composite digital signal. The composite digital signal is applied to a DAC to generate a composite multi-service analog/RF signal for subsequent transmission over a coaxial cable or wirelessly via an antenna.

主权项

1. A multi-service transceiver for transmitting and receiving service contents of a first service and a second service over a communications medium, comprising:
a frequency multiplexer/demultiplexer module configured to receive an input analog signal over the communications medium, the input analog signal including received service contents of the first service and second service, and to generate first and second receive analog signals representing, respectively, the received service content of the first service and the received service content of the second service; first and second front end modules configured to amplify, respectively, the first and second receive analog signals, and to generate first and second gain controlled analog signals; a combiner configured to combine the first and second gain controlled analog signals to generate a first composite analog signal; an analog-to-digital converter (ADC) configured to receive the first composite analog signal and to generate a first composite digital signal; and a channelizer module configured to receive the first composite digital signal and to generate first and second digital streams, the first and second digital streams representing, respectively, the received service content of the first service and the received service content of the second service.