Interference alignment based precoding method for reducing bandwidth of the backhaul network
F Lindqvist, M Guillaud, M Rezaeekheirabadi - US Patent 9,876,540, 2018 - Google Patents
A method and a first radio node for determining a first precoder to be used by the first radio
node for sending a transmission to a second radio node. The first radio node measures a set
of cross-channel responses. The first radio node encodes the set of cross-channel
responses into a first code-book index using a quantization scheme. The first radio node
sends the first code-book index to a central unit. The first radio node receives a second code-
book index from the central unit. The first radio node obtains a second precoder by decoding …
node for sending a transmission to a second radio node. The first radio node measures a set
of cross-channel responses. The first radio node encodes the set of cross-channel
responses into a first code-book index using a quantization scheme. The first radio node
sends the first code-book index to a central unit. The first radio node receives a second code-
book index from the central unit. The first radio node obtains a second precoder by decoding …