Patent ID: 10181923

Abstract:
A method and apparatus is for generating a modulation signal that comprises a resource block. A resource element sequence, Mnp, of M pilot symbols is determined that corresponds to an nth of N subcarriers. A pilot frequency domain sample sequence, rnp, corresponding to the resource element sequence Mnp comprises a quantity, RnNZ, of non-zero magnitude pilot frequency domain samples. RnNZ is determined based on M and an excess bandwidth, α, of an adjacent subcarrier filter. The resource element sequence Mnp, which has no inter-subcarrier interference, is multiplexed with N−1 resource element sequences to form the resource block. The modulation signal is generated by modulating each subcarrier of the N subcarriers with a corresponding resource element sequence of the N resource element sequences and filtering each of the modulated subcarriers using a subcarrier filter. The resource element sequence Mnp is used during receiving for efficiently determining a channel estimate.