System and method for efficient fronthaul communication for wireless communication
AssigneeAnalog Devices, Inc.
InventorEyosias Yoseph Imana
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Abstract
A system and method of reducing data-rate requirements of fronthauls for wireless communication is disclosed. In one aspect, the system includes a baseband processing unit and a remote radio head remotely located from the baseband processing unit. The remote radio head is configured to transmit and receive communication signals with the baseband processing unit. The system can also include a fronthaul configured to provide a communication channel between the baseband processing unit and the remote radio head for the communication signals, and a matched filter configured to filter out redundant information from the communications signals before the communications signals are provided to the fronthaul.
Claims20
A remote radio head (RRH) for communicating with a baseband processing unit (BBU) with efficient bandwidth, the RRH comprising:
- an RRH receiver configured to receive a first plurality of multiple-access wireless signals and to generate a first baseband receive signal comprising first symbols;
- a matched filter configured to generate a second baseband receive signal comprising second symbols via down-sampling the first symbols, wherein generating the second baseband receive signal comprises removing redundancy from the first baseband receive signal, and wherein the second baseband receive signal has reduced bandwidth relative to the first baseband receive signal;
- a pulse shaper configured to shape a first baseband transmit signal to generate a second baseband transmit signal of increased bandwidth relative to the first baseband transmit signal, wherein generating the second baseband transmit signal comprises introducing redundancy into the first baseband transmit signal;
- and
- an RRH transmitter configured to transmit a second plurality of multiple-access wireless signals based on the second baseband transmit signal.
A wireless communication system with fronthaul communication of efficient bandwidth, the wireless communication system comprising:
- a baseband processing unit (BBU);
- a fronthaul;
- and
- a remote radio head (RRH) remotely located from the BBU and configured to communicate with the BBU over the fronthaul, wherein the RRH comprises:
- a matched filter configured to down-sample a first baseband receive signal comprising first symbols to generate a second baseband receive signal comprising second symbols, wherein generating the second baseband receive signal comprises removing redundancy from the first baseband receive signal, and wherein the second baseband receive signal has reduced bandwidth relative to the first baseband receive signal and is communicated to the BBU over the fronthaul;
- and
- a pulse shaper configured to shape a first baseband transmit signal received via the fronthaul to generate a second baseband transmit signal of increased bandwidth relative to the first baseband transmit signal, wherein generating the second baseband transmit signal comprises introducing redundancy into the first baseband transmit signal.
A method for efficient fronthaul communication between a remote radio head (RRH) and a baseband processing unit (BBU), the method comprising:
- receiving a first plurality of multiple-access wireless signals and generating a first baseband signal comprising first symbols from the plurality of multiple-access wireless signals;
- down-sampling the first symbols using a matched filter to generate a second baseband receive signal comprising second symbols and of reduced bandwidth relative to the first baseband receive signal, wherein generating the second baseband receive signal comprises removing redundancy from the first baseband receive signal;
- communicating the second baseband receive signal through a fronthaul;
- receiving a first baseband transmit signal over the fronthaul;
- and
- shaping the first baseband transmit signal using a pulse shaper to generate a second baseband transmit signal of increased bandwidth relative to the first baseband transmit signal, wherein generating the second baseband transmit signal comprises introducing redundancy into the first baseband transmit signal.
Dependencies are inferred from the claim text.