Samsung Electronics Co., Ltd.

Dae-Ryong Lee

Jinesh Parameshwaran Nair

Atanu Guchhait

Ved Prakash

Ranjit Kumar

The present disclosure provides a method of selecting a plurality of sets of beam pairs in a wireless communication system. The method includes estimating, by a receiver, channels associated with a plurality of transmit ports for each receive port of a plurality of receive ports; and determining, by the receiver, the plurality of sets of the beam pairs including transmit beam and receive beam using: an average power level at each receive port for at least one transmit port based on the estimated channel associated between the beam pairs, a set of first power matrices, wherein each first power matrix, from the set of first power matrices, comprises at least one transmit port, beam ID pairs including transmit beam ID and receive beam ID associated with each receive port, wherein the set of first power matrices is formed based on the average power level at each of the receive port, and a second capacity matrix formed based on capacity maximization obtained from the set of first power matrices, wherein the plurality of sets of the beam pairs associated with each of the transmit port and receive port is selected from the second capacity matrix.

Method of selecting plurality of sets of optimal beam pairs in wireless communication system

A method for searching an excitation (or fixed) codebook in a speech coding system. In a speech coding system including a synthesis filter for synthesizing a speech signal, a fixed codebook searcher according to the present invention segments a speech signal frame into a plurality of subframes to generate an excitation signal to be used in a synthesis filter, segments again each of the subframes into a plurality of subgroups, and searches the respective subframes each comprised of a plurality of pulse position/amplitude combinations for pulses. The fixed codebook searcher searches the respective subgroups for a predetermine number of pulses having non-zero amplitude, and generates the searched pulses as an initial vector. Next, the fixed codebook searcher selects a pulse combination including at least one pulse among the pulses of the initial vector, and then substitutes pulses of the selected pulse combination for pulses in other positions in the subgroups. The selection and the substitution are repeatedly performed on all the pulses of the initial vector.

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Gyeonggi-do, South Korea

Dae-Ryong Lee