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Compression of baseband signals in base transceiver system radio units

  • US 8,331,461 B2
  • Filed: 09/23/2011
  • Issued: 12/11/2012
  • Est. Priority Date: 05/21/2008
  • Status: Active Grant
First Claim
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1. A radio for transmitting and receiving an RF signal including a plurality of antenna-carrier channels, comprising:

  • an interface for a bi-directional serial data channel carrying serial data streams including corresponding incoming and outgoing sequences of data structures, at least some of the data structures in the sequence holding compressed in-phase (I) and quadrature (Q) signal samples for a plurality of baseband antenna-carrier channels of a wireless communication network;

    logic coupled to assemble the outgoing sequences of data structures from a plurality of sequences of compressed I and Q signal samples corresponding to the plurality of baseband antenna-carrier channels, and to disassemble the incoming sequences of data structures, to recover a plurality of sequences of compressed I and Q signal samples corresponding to the plurality of baseband antenna-carrier channels; and

    compression and decompression logic arranged to compress I and Q signal samples of the plurality of baseband antenna-carrier channels to provide the outgoing sequences of compressed I and Q signal samples, and arranged to decompress the incoming sequences of compressed I and Q signal samples to provide decompressed I and Q signal samples of the plurality of baseband antenna-carrier channels;

    an upconverter arranged to upconvert the incoming sequences of decompressed I and Q signal samples for the respective baseband antenna-carrier channels to form digital samples of a plurality of antenna-carrier channels;

    a downconverter arranged to downconvert digital samples of a received RF signal to produce I and Q signal samples of the plurality of baseband antenna-carrier channels; and

    a transducer arranged to convert the digital samples of the plurality of antenna-carrier channels to an analog RF signal, and to convert the received analog RF signal to the digital samples of antenna-carrier channels.

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