Hierarchical codebook design for fast search with Grassmannian codebook

  title={Hierarchical codebook design for fast search with Grassmannian codebook},
  author={Kyeongjun Ko and Jungwoo Lee},
  journal={2012 IEEE Wireless Communications and Networking Conference (WCNC)},
It has been well known that channel aware systems (closed-loop) have better performance than channel unknown systems (open-loop). In order to know channel in the transmitter, receivers should send own channel information the transmitter through reverse channel. However, the channel information should be fed back in Frequency Division Duplexing (FDD) additionally since forward link channel and reverse link channel are different each other. In FDD, the channel information is usually quantized as… CONTINUE READING
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