[특허]Code division multiple access transmission antenna weighting

Code division multiple access transmission antenna weighting 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04B-001/00 H04B-001/69 H04B-001/712 H04B-007/06 H04B-007/08 H04J-013/00
출원번호	US-0901616 (2010-10-11)
등록번호	US-9219522 (2015-12-22)
발명자 / 주소	Mesecher, David K.
출원인 / 주소	InterDigital Technology Corporation
대리인 / 주소	Volpe and Koenig, P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 69

초록 ▼

A code division multiple access communication system has a base station with a plurality of transmitting antennas. From each transmitting antenna of the base station, a pilot signal is transmitted having a different chip sequence than the other transmitting antenna. At a user equipment, the transmitted pilot signals are received from each transmitting antenna. A weight adjustment is derived in response to the received transmitted pilot signals. The user equipment transmits the weight adjustment to the base station. The transmitted weight adjustment is received from the user equipment. A data signal is processed to produce a plurality of versions of the data signal. At least a portion of each processed data signal has a different chip sequence than the other processed data signal version. At least one processed data signal version is weighted by a weight value adjusted in response to the received transmitted weight adjustment. From each transmitting antenna, a different one of the data signal versions is transmitted and the transmitted data signal versions are received at the user equipment.

대표청구항 ▼

1. A receiving device comprising: circuitry configured to receive a signal including pilot bits transmitted by a plurality of antennas; wherein the received signal includes a single user data that was combined with different sequences producing a quality of combined data sequences; wherein antenna-specific weights for the plurality of antennas are applied to each of the combined data sequences and the antenna specific weights are applied to pilot bits added with the combined data sequences; wherein the received signal includes the pilot bits for each of the plurality of antennas; and wherein the pilot bits for each antenna have a different sequence for that antenna;the circuitry is further configured to derive preferred weights for the received signal based on the pilot bits for each antenna;the circuitry is further configured to recover data for the single user from each of the different sequences; andthe circuitry is further configured to combine data from the recovered data for the single user from each of the different sequences. 2. A method for use by a receiving device, the method comprising: receiving, by the receiving device, a signal including pilot bits transmitted by a plurality of antennas; wherein the received signal includes data for a single user that was combined with different sequences producing a plurality of combined data sequences; wherein antenna-specific weights for the plurality of antennas are applied to each of the combined data sequences and the antenna specific weights are applied to pilot bits added with the combined data sequences; wherein the received signal includes the pilot bits for each of the plurality of antennas; and wherein the pilot bits for each antenna have a different sequence for that antenna;deriving, by the receiving device, preferred weights for the received signal based on the pilot bits for each antenna;recovering, by the receiving device, data for the single user from each of the combined data sequences; andcombining, by the receiving device, data from the recovered data for the single user from each of the different sequences. 3. A transmitting device comprising: circuitry is configured to generate data for a single user for transmission to a receiving device;the circuitry is further configured to combine the data for the single user with different sequences to produce a plurality of combined data sequences; wherein antenna-specific weights for the plurality of antennas are applied to each of the combined data sequences and the antenna specific weights are applied to pilot bits added with the combined data sequences;the circuitry is further configured to produce pilot bits for each antenna of the plurality of antennas; wherein the pilot bits for each antenna have a different sequence for that antenna to permit the receiving device to derive weights for that antenna; andthe plurality of antennas configured to transmit the combined data sequences and the produced pilot bits using the plurality of antennas to the receiving device.

이 특허에 인용된 특허 (69)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Code division multiple access transmission antenna weighting 원문보기

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Code division multiple access transmission antenna weighting 원문보기

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