MIMO TRANSCEIVER ARRAY FOR MULTI-BAND MILLIMETER-WAVE 5G COMMUNICATION
According to one embodiment, a compact broadband radio frequency (RF) frontend circuit includes a number of single-channel transceivers, a number of analog to digital converters (ADCs), where each of the ADCs is coupled to one of the single-channel transceivers, a number of digital to analog converters (DACs), where each of the DACs is coupled to one of the single-channel transceivers, and a digital signal processing (DSP) unit coupled to the ADCs and the DACs. The DSP unit is configured to generate a first set of digital data streams simultaneously and each of the first set of digital data streams is converted by a respective one of the DACs into an analog data stream to be transmitted to a remote device by a respective one of the single-channel transceiver.
1 . A radio frequency (RF) frontend circuit comprising:
a plurality of single-channel transceivers, each single-channel transceiver including a receive chain and a transmit chain, both the receive and transmit chains to receive a common local oscillator signal;
a plurality of analog to digital converters (ADCs), wherein each of the plurality of ADCs is coupled to one of the plurality of single-channel transceivers;
a plurality of digital to analog converters (DACs); wherein each of the plurality of DACs is coupled to one of the plurality of single-channel transceivers; and
a digital signal processing (DSP) unit coupled to the ADCs and the DACs, wherein the DSP unit is configured to generate a first plurality of digital data streams simultaneously and each of the first plurality of digital data streams is converted by a respective one of the DACs into an analog data stream to be transmitted to a remote device by a respective one of the single-channel transceiver.
2 . The RF frontend circuit of claim 1 , wherein the plurality of single-channel transceivers includes a plurality of identical channels.
3 . The RF frontend circuit of claim 2 , wherein the plurality of single-channel transceivers support a plurality of users using the plurality of identical channels.
4 . The RF frontend circuit of claim 1 , wherein each of the plurality of single-channel transceivers transmits and receives an independent data stream.
5 . The RF frontend circuit of claim 1 , wherein the plurality of single-channel transceivers includes a plurality of antennas each corresponding to a separate radiation angle.
6 . The RF frontend circuit of claim 5 , wherein the antennas track a user moving within a corresponding radiation angle.
7 . The RF frontend circuit of claim 6 , wherein the antennas track a plurality of users moving within the corresponding radiation angle.
8 . The RF frontend circuit of claim 1 , wherein each of the plurality of single-channel transceivers includes a bias interface.
9 . The RF frontend circuit of claim 1 , wherein each of the plurality of single-channel transceivers includes a digital interface.
10 . The RF frontend circuit of claim 1 , wherein the DSP unit is further configured to receive a second plurality of digital data streams from the ADCs.
11 . The RF frontend circuit of claim 10 , wherein each of the second plurality of digital data streams is received by a respective one of the single-channel transceiver via a specific radiation angle.
12 . The RF frontend circuit of claim 11 , wherein the second plurality of digital data streams are received simultaneously.
13 . The RF frontend circuit of claim 11 , wherein the second plurality of digital data streams are synchronized in time.
14 . The RF frontend of claim 1 , wherein the first plurality of digital streams are synchronized in time.