KR100958957B1 - 시분할 듀플렉스 통신 시스템에 대한 채널 교정 - Google Patents
시분할 듀플렉스 통신 시스템에 대한 채널 교정 Download PDFInfo
- Publication number
- KR100958957B1 KR100958957B1 KR1020077019586A KR20077019586A KR100958957B1 KR 100958957 B1 KR100958957 B1 KR 100958957B1 KR 1020077019586 A KR1020077019586 A KR 1020077019586A KR 20077019586 A KR20077019586 A KR 20077019586A KR 100958957 B1 KR100958957 B1 KR 100958957B1
- Authority
- KR
- South Korea
- Prior art keywords
- correction factors
- user terminal
- access point
- station
- matrix
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/50—TPC being performed in particular situations at the moment of starting communication in a multiple access environment
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0417—Feedback systems
- H04B7/0421—Feedback systems utilizing implicit feedback, e.g. steered pilot signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
- H04B7/0669—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different channel coding between antennas
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0697—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using spatial multiplexing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/0848—Joint weighting
- H04B7/0854—Joint weighting using error minimizing algorithms, e.g. minimum mean squared error [MMSE], "cross-correlation" or matrix inversion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
- H04L1/0017—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy where the mode-switching is based on Quality of Service requirement
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0059—Convolutional codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0067—Rate matching
- H04L1/0068—Rate matching by puncturing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0071—Use of interleaving
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0204—Channel estimation of multiple channels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
- H04L25/0244—Channel estimation channel estimation algorithms using matrix methods with inversion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/0256—Channel estimation using minimum mean square error criteria
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03343—Arrangements at the transmitter end
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/22—Arrangements affording multiple use of the transmission path using time-division multiplexing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L2001/0092—Error control systems characterised by the topology of the transmission link
- H04L2001/0093—Point-to-multipoint
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
- H04L2025/03375—Passband transmission
- H04L2025/03414—Multicarrier
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
- H04L2025/03426—Arrangements for removing intersymbol interference characterised by the type of transmission transmission using multiple-input and multiple-output channels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0226—Channel estimation using sounding signals sounding signals per se
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
Abstract
Description
Claims (40)
- 무선 시분할 듀플렉스(TDD) 통신 시스템에서 통신 링크들을 교정(calibrate)하는 방법으로서,액세스 포인트로부터 사용자 단말로의 다운링크 채널에 대한 채널 응답 추정치를 획득하는 단계;상기 사용자 단말로부터 상기 액세스 포인트로의 업링크 채널에 대한 채널 응답 추정치를 획득하는 단계; 및상기 다운링크 및 업링크 채널들에 대한 상기 채널 응답 추정치들을 기반으로 상기 액세스 포인트에 대한 정정 인자(factor)들 및 상기 사용자 단말에 대한 정정 인자들을 결정하는 단계를 포함하며, 상기 액세스 포인트에 대한 정정 인자들 및 상기 사용자 단말에 대한 정정 인자들은 교정된 다운링크 채널 응답 및 교정된 업링크 채널 응답을 획득하는데 사용되고,상기 방법은,(1) 상기 액세스 포인트에 대한 정정 인자들에 기반하여 상기 액세스 포인트의 송신 측에 대한 정정 인자들 및 상기 액세스 포인트의 수신 측에 대한 정정 인자들을 유도(derive)하는 단계; 또는(2) 상기 사용자 단말에 대한 정정 인자들에 기반하여 상기 사용자 단말의 송신 측에 대한 정정 인자들 및 상기 사용자 단말의 수신 측에 대한 정정 인자들을 유도하는 단계를 더 포함하는, 통신 링크 교정 방법.
- 제 1 항에 있어서,상기 액세스 포인트에서 송신 측이나 수신 측에, 또는 상기 송신 측과 수신 측 양쪽에 상기 액세스 포인트에 대한 정정 인자들을 적용하는 단계를 더 포함하는, 통신 링크 교정 방법.
- 제 1 항에 있어서,상기 사용자 단말에서 송신 측이나 수신 측에, 또는 상기 송신 측과 수신 측 양쪽에 상기 사용자 단말에 대한 정정 인자들을 적용하는 단계를 더 포함하는, 통신 링크 교정 방법.
- 제 1 항에 있어서,상기 액세스 포인트에 대한 정정 인자들 및 상기 사용자 단말에 대한 정정 인자들을 결정하는 단계는,다음 식을 기반으로 상기 액세스 포인트에 대한 정정 인자들 및 상기 사용자 단말에 대한 정정 인자들을 결정하는 단계를 포함하며:" T "는 전치 행렬(transpose)을 나타내는, 통신 링크 교정 방법.
- 제 1 항에 있어서,상기 액세스 포인트에 대한 정정 인자들 및 상기 사용자 단말에 대한 정정 인자들을 결정하는 단계는,제 1 세트의 주파수 부대역들에 대한 상기 액세스 포인트의 제 1 세트의 정정 인자 행렬들을 유도하는 단계; 및제 2 세트의 주파수 부대역들에 대한 상기 액세스 포인트의 제 2 세트의 정정 인자 행렬들을 획득하기 위해 상기 제 1 세트의 행렬들을 보간하는(interpolate) 단계를 포함하는, 통신 링크 교정 방법.
- 제 1 항에 있어서,상기 액세스 포인트에 대한 정정 인자들 및 상기 사용자 단말에 대한 정정 인자들을 결정하는 단계는,제 1 세트의 주파수 부대역들에 대한 상기 사용자 단말의 제 1 세트의 정정 인자 행렬들을 유도하는 단계; 및제 2 세트의 주파수 부대역들에 대한 상기 사용자 단말의 제 2 세트의 정정 인자 행렬들을 획득하기 위해 상기 제 1 세트의 행렬들을 보간하는 단계를 포함하는, 통신 링크 교정 방법.
- 제 1 항에 있어서,상기 업링크 채널 상에서 파일럿을 전송하는 단계- 상기 업링크 채널 응답 추정치는 상기 업링크 채널 상에서 전송된 파일럿을 기반으로 유도됨 -; 및상기 다운링크 채널 상에서 파일럿을 수신하는 단계- 상기 다운링크 채널 응답 추정치는 상기 다운링크 채널 상에서 수신된 파일럿을 기반으로 유도됨 -를 더 포함하는, 통신 링크 교정 방법.
- 무선 시분할 듀플렉스(TDD) 통신 시스템의 장치로서,액세스 포인트로부터 사용자 단말로의 다운링크 채널에 대한 채널 응답 추정치를 획득하기 위한 수단;상기 사용자 단말로부터 상기 액세스 포인트로의 업링크 채널에 대한 채널 응답 추정치를 획득하기 위한 수단; 및상기 다운링크 및 업링크 채널에 대한 채널 응답 추정치를 기반으로 상기 액세스 포인트에 대한 정정 인자들 및 상기 사용자 단말에 대한 정정 인자들을 결정하기 위한 수단을 포함하며, 상기 액세스 포인트에 대한 정정 인자들 및 상기 사용자 단말에 대한 정정 인자들은 교정된 다운링크 채널 응답 및 교정된 업링크 채널 응답을 획득하는데 사용되고,상기 장치는:(1) 상기 액세스 포인트에 대한 정정 인자들을 기반으로 상기 액세스 포인트의 송신 측에 대한 정정 인자들 및 상기 액세스 포인트의 수신 측에 대한 정정 인자들을 유도하기 위한 수단; 또는(2) 상기 사용자 단말에 대한 정정 인자들을 기반으로 상기 사용자 단말의 송신 측에 대한 정정 인자들 및 상기 사용자 단말의 수신 측에 대한 정정 인자들을 유도하기 위한 수단을 더 포함하는, 무선 TDD 통신 시스템의 장치.
- 제 17 항에 있어서,상기 액세스 포인트에서 송신 측이나 수신 측에, 또는 송신 측과 수신 측 양쪽에 상기 액세스 포인트에 대한 정정 인자들을 적용하기 위한 수단을 더 포함하는, 무선 TDD 통신 시스템의 장치.
- 삭제
- 제 17 항에 있어서,상기 사용자 단말에서 송신 측이나 수신 측에, 또는 송신 측과 수신 측 양쪽에 상기 사용자 단말에 대한 정정 인자들을 적용하기 위한 수단을 더 포함하는, 무선 TDD 통신 시스템의 장치.
- 삭제
- 제 17 항에 있어서,상기 액세스 포인트에 대한 정정 인자들 및 상기 사용자 단말에 대한 정정 인자들을 결정하기 위한 수단은,상기 액세스 포인트에 대한 정정 인자들 및 상기 사용자 단말에 대한 정정 인자들을 결정하기 위해 상기 다운링크 및 업링크 채널에 대한 상기 채널 응답 추정치들에 대해 최소 평균 제곱 에러(MMSE) 계산을 수행하기 위한 수단을 포함하는, 무선 TDD 통신 시스템의 장치.
- 제 17 항에 있어서,상기 액세스 포인트에 대한 정정 인자들 및 상기 사용자 단말에 대한 정정 인자들을 결정하기 위한 수단은,상기 액세스 포인트에 대한 정정 인자들 및 상기 사용자 단말에 대한 정정 인자들을 결정하기 위해 상기 다운링크 및 업링크 채널에 대한 상기 채널 응답 추정치들에 대해 행렬비 계산을 수행하기 위한 수단을 포함하는, 무선 TDD 통신 시스템의 장치.
- 무선 시분할 듀플렉스(TDD) 다중 입력 다중 출력(MIMO) 통신 시스템에서 통신 링크들을 교정하는 방법으로서,제 1 국(station)으로부터 제 2 국으로의 제 1 통신 링크 상에서 파일럿을 전송하는 단계;상기 제 1 통신 링크 상에서 전송된 파일럿을 기반으로 유도된 상기 제 1 통신 링크에 대한 채널 응답 추정치를 획득하는 단계;상기 제 2 국으로부터 제 2 통신 링크 상에서 파일럿을 수신하는 단계;상기 제 2 통신 링크 상에서 수신된 상기 파일럿을 기반으로 상기 제 2 통신 링크에 대한 채널 응답 추정치를 유도하는 단계; 및상기 제 1 및 제 2 통신 링크들에 대한 상기 채널 응답 추정치들을 기반으로 상기 제 1 국에 대한 정정 인자들 및 상기 제 2 국에 대한 정정 인자들을 결정하는 단계를 포함하며, 상기 제 1 국에 대한 정정 인자들 및 상기 제 2 국에 대한 정정 인자들은 상기 제 1 통신 링크에 대한 교정된 채널 응답 및 상기 제 2 통신 링크에 대한 교정된 채널 응답을 획득하는데 사용되는, 통신 링크 교정 방법.
- 제 24 항에 있어서,상기 제 1 국에서 송신 측이나 수신 측에, 또는 송신 측과 수신 측 양쪽에 상기 제 1 국에 대한 정정 인자들을 적용하는 단계를 더 포함하는, 통신 링크 교정 방법.
- 제 24 항에 있어서,상기 제 2 국에 대한 정정 인자들을 상기 제 2 국에 전송하는 단계를 더 포함하는, 통신 링크 교정 방법.
- 제 24 항에 있어서,다수의 제 2 국에 의한 교정을 기반으로 상기 제 1 국에 대한 정정 인자들을 업데이트하는 단계를 더 포함하는, 통신 링크 교정 방법.
- 무선 시분할 듀플렉스(TDD) 통신 시스템의 장치로서,제 1 국으로부터 제 2 국으로의 제 1 통신 링크 상에서 제 1 파일럿을 전송하는 송신 공간 프로세서;상기 제 2 국으로부터 제 2 통신 링크 상에서 제 2 파일럿을 수신하고, 상기 수신된 제 2 파일럿을 기반으로 상기 제 2 통신 링크에 대한 채널 응답 추정치를 유도하며, 상기 전송된 제 1 파일럿을 기반으로 유도된 상기 제 1 통신 링크에 대한 채널 응답 추정치를 수신하는 수신 공간 프로세서; 및상기 제 1 및 제 2 통신 링크들에 대한 상기 채널 응답 추정치를 기반으로 상기 제 1 국에 대한 정정 인자들 및 상기 제 2 국에 대한 정정 인자들을 결정하는 제어기를 포함하며, 상기 제 1 국에 대한 정정 인자들 및 상기 제 2 국에 대한 정정 인자들은 상기 제 1 통신 링크에 대한 교정된 채널 응답 및 상기 제 2 통신 링크에 대한 교정된 채널 응답을 획득하는데 사용되는, 무선 TDD 통신 시스템의 장치.
- 제 28 항에 있어서,상기 제어기는 상기 제 1 국에 대한 정정 인자들 및 상기 제 2 국에 대한 정정 인자들을 결정하기 위해 상기 제 1 및 제 2 통신 링크에 대한 채널 응답 추정치에 대해 최소 평균 제곱 에러(MMSE) 계산을 수행하는, 무선 TDD 통신 시스템의 장치.
- 제 28 항에 있어서,상기 제어기는 상기 제 1 국에 대한 정정 인자들 및 상기 제 2 국에 대한 정정 인자들을 결정하기 위해 상기 제 1 및 제 2 통신 링크에 대한 채널 응답 추정치에 대해 행렬비 계산을 수행하는, 무선 TDD 통신 시스템의 장치.
- 제 28 항에 있어서,상기 제어기는 상기 제 1 국에 대한 정정 인자들을 기반으로 상기 송신 공간 프로세서에 대한 정정 인자들 및 상기 수신 공간 프로세서에 대한 정정 인자들을 유도하는, 무선 TDD 통신 시스템의 장치.
- 제 28 항에 있어서,상기 제어기는 다수의 제 2 국에 의한 교정을 기반으로 상기 제 1 국에 대한 정정 인자들을 업데이트하는, 무선 TDD 통신 시스템의 장치.
- 무선 시분할 듀플렉스(TDD) 다중 입력 다중 출력(MIMO) 통신 시스템에서 데이터를 전송하는 방법으로서,제 1 국에서 송신 측이나 수신 측에, 또는 송신 측과 수신 측 양쪽에 상기 제 1 국에 대한 정정 인자들을 적용하는 단계;상기 제 1 국으로부터 제 2 국으로의 제 1 통신 링크 상에서 파일럿을 전송하는 단계; 및상기 제 2 국으로부터 상기 제 1 국으로의 제 2 통신 링크 상에서 전송된 데이터 전송을 수신하는 단계를 포함하며, 상기 데이터 전송은 상기 제 1 통신 링크 상에서 전송된 파일럿으로부터 유도된 상기 제 1 통신 링크에 대한 채널 응답 추정치를 기반으로 공간 처리되는, 데이터 전송 방법.
- 제 33 항에 있어서,상기 수신된 데이터 전송을 정합 필터로 공간 처리하는 단계를 더 포함하는, 데이터 전송 방법.
- 제 33 항에 있어서,상기 제 2 통신 링크 상에서 전송된 데이터 전송을 수신하는 단계는,상기 제 2 통신 링크의 다수의 고유 모드에서 전송된 데이터 전송을 수신하는 단계를 포함하는, 데이터 전송 방법.
- 제 33 항에 있어서,상기 제 2 국은 상기 제 2 국에서 송신 측이나 수신 측에, 또는 송신 측과 수신 측 양쪽에 정정 인자들을 적용하는, 데이터 전송 방법.
- 무선 시분할 듀플렉스(TDD) 다중 입력 다중 출력(MIMO) 통신 시스템의 장치로서,제 1 국에서 송신 측이나 수신 측에, 또는 송신 측과 수신 측 양쪽에 상기 제 1 국에 대한 정정 인자들을 적용하기 위한 수단;상기 제 1 국으로부터 제 2 국으로의 제 1 통신 링크 상에서 파일럿을 전송하기 위한 수단; 및상기 제 2 국으로부터 상기 제 1 국으로의 제 2 통신 링크 상에서 전송된 데이터 전송을 수신하기 위한 수단을 포함하며, 상기 데이터 전송은 상기 제 1 통신 링크 상에서 전송된 파일럿으로부터 유도된 상기 제 1 통신 링크에 대한 채널 응답 추정치를 기반으로 공간 처리되는, TDD MIMO 통신 시스템의 장치.
- 무선 시분할 듀플렉스(TDD) 다중 입력 다중 출력(MIMO) 통신 시스템의 장치로서,제 1 국에서 제 2 국으로의 제 1 통신 링크 상에서 파일럿을 전송하는 송신 프로세서; 및상기 제 2 국으로부터 상기 제 1 국으로의 제 2 통신 링크 상에서 전송된 데이터 전송을 수신하는 수신 프로세서를 포함하며, 상기 데이터 전송은 상기 제 1 통신 링크 상에서 전송된 파일럿으로부터 유도된 상기 제 1 통신 링크에 대한 채널 응답 추정치를 기반으로 공간 처리되고, 상기 송신 프로세서가 상기 전송된 파일럿에 정정 인자들을 적용하거나, 상기 수신 프로세서가 상기 수신된 데이터 전송에 정정 인자들을 적용하거나, 또는 상기 송신 프로세서는 상기 전송된 파일럿에 정정 인자들을 적용하고 상기 수신 프로세서는 상기 수신된 데이터 전송에 정정 인자들을 적용하는, TDD MIMO 통신 시스템의 장치.
- 무선 시분할 듀플렉스(TDD) 다중 입력 다중 출력(MIMO) 통신 시스템에서 데이터를 전송하는 방법으로서,제 1 국에서 제 2 국으로의 제 1 통신 링크 상에서 파일럿을 전송하는 단계;상기 제 2 국으로부터 상기 제 1 국으로의 제 2 통신 링크 상에서 전송된 데이터 전송을 수신하는 단계 - 상기 제 2 국은 상기 제 2 국에서 송신 측이나 수신 측에, 또는 송신 측과 수신 측 양쪽에 정정 인자들을 적용하고, 상기 데이터 전송은 상기 제 1 통신 링크 상에서 전송된 파일럿으로부터 유도된 상기 제 1 통신 링크에 대한 채널 응답 추정치를 기반으로 공간 처리됨 -; 및상기 제 1 국에서 상기 수신된 데이터 전송을 최소 평균 제곱 에러(MMSE)에 의해 처리하는 단계를 포함하는, 데이터 전송 방법.
- 제 39 항에 있어서,상기 제 2 통신 링크 상에서 전송된 데이터 전송을 수신하는 단계는,상기 제 2 통신 링크의 다수의 고유 모드에서 전송된 데이터 전송을 수신하는 단계를 포함하는, 데이터 전송 방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/045,781 US8570988B2 (en) | 2002-10-25 | 2005-01-27 | Channel calibration for a time division duplexed communication system |
US11/045,781 | 2005-01-27 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020107002240A Division KR20100025593A (ko) | 2005-01-27 | 2006-01-27 | 시분할 듀플렉스 통신 시스템에 대한 채널 교정 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20070107073A KR20070107073A (ko) | 2007-11-06 |
KR100958957B1 true KR100958957B1 (ko) | 2010-05-20 |
Family
ID=36215812
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020077019586A KR100958957B1 (ko) | 2005-01-27 | 2006-01-27 | 시분할 듀플렉스 통신 시스템에 대한 채널 교정 |
KR1020107002240A KR20100025593A (ko) | 2005-01-27 | 2006-01-27 | 시분할 듀플렉스 통신 시스템에 대한 채널 교정 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020107002240A KR20100025593A (ko) | 2005-01-27 | 2006-01-27 | 시분할 듀플렉스 통신 시스템에 대한 채널 교정 |
Country Status (11)
Country | Link |
---|---|
US (1) | US8570988B2 (ko) |
EP (1) | EP1847036A2 (ko) |
JP (2) | JP4773461B2 (ko) |
KR (2) | KR100958957B1 (ko) |
CN (2) | CN101133565B (ko) |
BR (1) | BRPI0607131A2 (ko) |
CA (2) | CA2732214A1 (ko) |
RU (1) | RU2407151C2 (ko) |
SG (2) | SG143245A1 (ko) |
TW (1) | TWI371188B (ko) |
WO (1) | WO2006081550A2 (ko) |
Families Citing this family (62)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8194770B2 (en) | 2002-08-27 | 2012-06-05 | Qualcomm Incorporated | Coded MIMO systems with selective channel inversion applied per eigenmode |
US7002900B2 (en) | 2002-10-25 | 2006-02-21 | Qualcomm Incorporated | Transmit diversity processing for a multi-antenna communication system |
US8134976B2 (en) * | 2002-10-25 | 2012-03-13 | Qualcomm Incorporated | Channel calibration for a time division duplexed communication system |
US8218609B2 (en) | 2002-10-25 | 2012-07-10 | Qualcomm Incorporated | Closed-loop rate control for a multi-channel communication system |
US8208364B2 (en) | 2002-10-25 | 2012-06-26 | Qualcomm Incorporated | MIMO system with multiple spatial multiplexing modes |
US20040081131A1 (en) | 2002-10-25 | 2004-04-29 | Walton Jay Rod | OFDM communication system with multiple OFDM symbol sizes |
US7324429B2 (en) | 2002-10-25 | 2008-01-29 | Qualcomm, Incorporated | Multi-mode terminal in a wireless MIMO system |
US8169944B2 (en) | 2002-10-25 | 2012-05-01 | Qualcomm Incorporated | Random access for wireless multiple-access communication systems |
US8170513B2 (en) | 2002-10-25 | 2012-05-01 | Qualcomm Incorporated | Data detection and demodulation for wireless communication systems |
US8320301B2 (en) | 2002-10-25 | 2012-11-27 | Qualcomm Incorporated | MIMO WLAN system |
US7986742B2 (en) | 2002-10-25 | 2011-07-26 | Qualcomm Incorporated | Pilots for MIMO communication system |
US8570988B2 (en) * | 2002-10-25 | 2013-10-29 | Qualcomm Incorporated | Channel calibration for a time division duplexed communication system |
US7333788B2 (en) * | 2002-12-20 | 2008-02-19 | Texas Instruments Incorporated | Method for calibrating automatic gain control in wireless devices |
US9473269B2 (en) | 2003-12-01 | 2016-10-18 | Qualcomm Incorporated | Method and apparatus for providing an efficient control channel structure in a wireless communication system |
US7206550B2 (en) * | 2003-12-29 | 2007-04-17 | Intel Corporation | Antenna subsystem calibration apparatus and methods in spatial-division multiple-access systems |
US8369790B2 (en) | 2003-12-30 | 2013-02-05 | Intel Corporation | Communication overhead reduction apparatus, systems, and methods |
US8077691B2 (en) * | 2004-03-05 | 2011-12-13 | Qualcomm Incorporated | Pilot transmission and channel estimation for MISO and MIMO receivers in a multi-antenna system |
JP2006033083A (ja) * | 2004-07-12 | 2006-02-02 | Oki Electric Ind Co Ltd | Ofdm伝送システム。 |
US7860149B2 (en) * | 2004-12-22 | 2010-12-28 | Qualcomm Incorporated | Methods and apparatus for flexible hopping in a multiple-access communication network |
US7466749B2 (en) | 2005-05-12 | 2008-12-16 | Qualcomm Incorporated | Rate selection with margin sharing |
US8358714B2 (en) | 2005-06-16 | 2013-01-22 | Qualcomm Incorporated | Coding and modulation for multiple data streams in a communication system |
US8340597B1 (en) | 2006-05-02 | 2012-12-25 | Marvell International Ltd. | Calibration correction for implicit beamforming in a wireless MIMO communication system |
US20090296846A1 (en) * | 2006-11-17 | 2009-12-03 | Tsuguo Maru | Mimo communication system having deterministic channels and method |
EP2154802A4 (en) * | 2007-05-29 | 2014-03-26 | Mitsubishi Electric Corp | CALIBRATION PROCEDURE, COMMUNICATION SYSTEM, FREQUENCY CONTROL METHOD AND COMMUNICATION DEVICE |
US8798183B2 (en) * | 2007-08-13 | 2014-08-05 | Qualcomm Incorporated | Feedback and rate adaptation for MIMO transmission in a time division duplexed (TDD) communication system |
US7929918B2 (en) | 2007-08-13 | 2011-04-19 | Samsung Electronics Co., Ltd. | System and method for training the same type of directional antennas that adapts the training sequence length to the number of antennas |
CN101400117B (zh) * | 2007-09-27 | 2011-12-28 | 联想(上海)有限公司 | 下行信道状态信息确定方法与装置及预编码方法与装置 |
US20090121935A1 (en) * | 2007-11-12 | 2009-05-14 | Samsung Electronics Co., Ltd. | System and method of weighted averaging in the estimation of antenna beamforming coefficients |
WO2009087629A2 (en) * | 2008-01-08 | 2009-07-16 | Designart Networks Ltd | Mmse method |
US8478204B2 (en) | 2008-07-14 | 2013-07-02 | Samsung Electronics Co., Ltd. | System and method for antenna training of beamforming vectors having reuse of directional information |
US7733975B1 (en) * | 2008-12-31 | 2010-06-08 | Mediatek Inc. | Method for estimating phase error in MIMO OFDM communications system |
US20100329236A1 (en) * | 2009-06-26 | 2010-12-30 | Qualcomm Incorporated | Method and apparatus for multiple user uplink requiring minimal station timing and frequency synchronization |
US8665767B2 (en) * | 2009-08-25 | 2014-03-04 | Qualcomm Incorporated | Method and apparatus for multiple-user communication in a client initiated communication transmission scheme |
CN102986181B (zh) * | 2009-11-09 | 2015-07-29 | 华为技术有限公司 | 一种微波信号的校正方法、装置和系统 |
EP2536036A4 (en) * | 2010-02-12 | 2015-07-08 | Alcatel Lucent | DEVICE AND METHOD FOR CALIBRATING RECIPROCITY ERRORS |
CN102082745B (zh) * | 2010-04-19 | 2013-10-16 | 电信科学技术研究院 | 天线校准信息的上报、天线校准因子的确定方法及设备 |
US8971210B1 (en) * | 2011-05-23 | 2015-03-03 | Redpine Signals, Inc. | Reconfigurable multi-stream processor for multiple-input multiple-output (MIMO) wireless networks |
US8625713B2 (en) * | 2011-09-19 | 2014-01-07 | Alcatel Lucent | Method for beamforming transmissions from a network element having a plurality of antennas, and the network element |
US8891464B2 (en) | 2011-09-19 | 2014-11-18 | Redline Innovations Group, Inc. | Architecture, devices and methods for supporting multiple channels in a wireless system |
US9154969B1 (en) | 2011-09-29 | 2015-10-06 | Marvell International Ltd. | Wireless device calibration for implicit transmit |
CN103037519A (zh) * | 2011-10-10 | 2013-04-10 | 中兴通讯股份有限公司 | 多接入点校准方法及装置 |
US9037094B2 (en) | 2011-10-17 | 2015-05-19 | Golba Llc | Method and system for high-throughput and low-power communication links in a distributed transceiver network |
US9374724B2 (en) | 2011-11-03 | 2016-06-21 | Telefonaktiebolaget Lm Ericsson (Publ) | Channel estimation using reference signals |
US9253587B2 (en) | 2012-08-08 | 2016-02-02 | Golba Llc | Method and system for intelligently controlling propagation environments in distributed transceiver communications |
CN103595514B (zh) * | 2012-08-13 | 2018-02-16 | 中兴通讯股份有限公司 | 一种对协作ap点发送的数据进行校准的方法和基站 |
CN103236886B (zh) * | 2013-03-27 | 2015-05-06 | 大唐移动通信设备有限公司 | 一种基站通道故障检测方法和系统 |
CN110035442B (zh) * | 2013-05-24 | 2022-03-15 | 日本电信电话株式会社 | 无线通信装置以及无线通信方法 |
WO2015188361A1 (en) * | 2014-06-12 | 2015-12-17 | Nokia Solutions And Networks Oy | Method, apparatus and computer program |
CN105634696B (zh) * | 2014-10-31 | 2019-02-22 | 富士通株式会社 | 多载波调制信号的比特分配方法、装置和系统 |
CN106160820B (zh) * | 2015-03-30 | 2019-04-05 | 北京信威通信技术股份有限公司 | 一种基于信道互易性获取下行信道信息的方法 |
EP3566339B1 (en) * | 2017-01-09 | 2022-12-07 | QUALCOMM Incorporated | Over-the-air calibration for reciprocity based ul mimo transmission |
US10523345B2 (en) * | 2017-03-06 | 2019-12-31 | Samsung Electronics Co., Ltd. | Methods and apparatus for calibration and array operation in advanced MIMO system |
CN107104742B (zh) * | 2017-04-02 | 2020-11-10 | 上海无线通信研究中心 | 一种面向并行多通道无线信道测量的校准方法及其系统 |
US10321332B2 (en) | 2017-05-30 | 2019-06-11 | Movandi Corporation | Non-line-of-sight (NLOS) coverage for millimeter wave communication |
US10484078B2 (en) | 2017-07-11 | 2019-11-19 | Movandi Corporation | Reconfigurable and modular active repeater device |
US10348371B2 (en) | 2017-12-07 | 2019-07-09 | Movandi Corporation | Optimized multi-beam antenna array network with an extended radio frequency range |
US10090887B1 (en) | 2017-12-08 | 2018-10-02 | Movandi Corporation | Controlled power transmission in radio frequency (RF) device network |
US10862559B2 (en) | 2017-12-08 | 2020-12-08 | Movandi Corporation | Signal cancellation in radio frequency (RF) device network |
US10637159B2 (en) | 2018-02-26 | 2020-04-28 | Movandi Corporation | Waveguide antenna element-based beam forming phased array antenna system for millimeter wave communication |
US11088457B2 (en) | 2018-02-26 | 2021-08-10 | Silicon Valley Bank | Waveguide antenna element based beam forming phased array antenna system for millimeter wave communication |
CN110266620B (zh) * | 2019-07-08 | 2020-06-30 | 电子科技大学 | 基于卷积神经网络的3d mimo-ofdm系统信道估计方法 |
CN115412406B (zh) * | 2021-05-27 | 2023-08-01 | 大唐移动通信设备有限公司 | 通道校准方法、装置及处理器可读存储介质 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20010048675A1 (en) * | 2000-03-29 | 2001-12-06 | Mohammed Nafie | Wireless communication |
US20030002450A1 (en) | 2001-06-22 | 2003-01-02 | Ahmad Jalali | Method and apparatus for transmitting data in a time division duplexed (TDD) communication system |
WO2004039022A2 (en) * | 2002-10-25 | 2004-05-06 | Qualcomm, Incorporated | Correction for differences between downlink and uplink channel responses |
Family Cites Families (455)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1261080A (en) | 1985-12-30 | 1989-09-26 | Shunichiro Tejima | Satellite communications system with random multiple access and time slot reservation |
US4750198A (en) | 1986-12-12 | 1988-06-07 | Astronet Corporation/Plessey U.K. | Cellular radiotelephone system providing diverse separately-accessible groups of channels |
US4797879A (en) | 1987-06-05 | 1989-01-10 | American Telephone And Telegraph Company At&T Bell Laboratories | Packet switched interconnection protocols for a star configured optical lan |
IL100213A (en) | 1990-12-07 | 1995-03-30 | Qualcomm Inc | Mikrata Kedma phone system and its antenna distribution system |
US5239677A (en) | 1991-07-01 | 1993-08-24 | Motorola, Inc. | Method and apparatus for initiating communication on an assigned frequency |
IT1250515B (it) | 1991-10-07 | 1995-04-08 | Sixtel Spa | Rete per area locale senza fili. |
US5241544A (en) | 1991-11-01 | 1993-08-31 | Motorola, Inc. | Multi-channel tdm communication system slot phase correction |
US5592490A (en) | 1991-12-12 | 1997-01-07 | Arraycomm, Inc. | Spectrally efficient high capacity wireless communication systems |
US6850252B1 (en) | 1999-10-05 | 2005-02-01 | Steven M. Hoffberg | Intelligent electronic appliance system and method |
US5295159A (en) | 1992-04-17 | 1994-03-15 | Bell Communications Research, Inc. | Coordinated coding for digital transmission |
RU2015281C1 (ru) | 1992-09-22 | 1994-06-30 | Борис Михайлович Кондрашов | Запорное устройство |
GB2300337B (en) | 1992-10-05 | 1997-03-26 | Ericsson Ge Mobile Communicat | Digital control channel |
US5404355A (en) | 1992-10-05 | 1995-04-04 | Ericsson Ge Mobile Communications, Inc. | Method for transmitting broadcast information in a digital control channel |
US5471647A (en) | 1993-04-14 | 1995-11-28 | The Leland Stanford Junior University | Method for minimizing cross-talk in adaptive transmission antennas |
US5479447A (en) | 1993-05-03 | 1995-12-26 | The Board Of Trustees Of The Leland Stanford, Junior University | Method and apparatus for adaptive, variable bandwidth, high-speed data transmission of a multicarrier signal over digital subscriber lines |
US5483667A (en) | 1993-07-08 | 1996-01-09 | Northern Telecom Limited | Frequency plan for a cellular network |
DE69423546T2 (de) | 1993-07-09 | 2000-09-21 | Koninkl Philips Electronics Nv | Telekommunikationsnetzwerk, Hauptstation und Nebenstation zum Gebrauch in solchem Netzwerk |
US5506861A (en) | 1993-11-22 | 1996-04-09 | Ericsson Ge Mobile Comminications Inc. | System and method for joint demodulation of CDMA signals |
US5490087A (en) | 1993-12-06 | 1996-02-06 | Motorola, Inc. | Radio channel access control |
US5422733A (en) | 1994-02-04 | 1995-06-06 | Motorola, Inc. | Method and apparatus for facsimile communication of first and second type information with selective call communication systems |
US5491837A (en) | 1994-03-07 | 1996-02-13 | Ericsson Inc. | Method and system for channel allocation using power control and mobile-assisted handover measurements |
US5493712A (en) | 1994-03-23 | 1996-02-20 | At&T Corp. | Fast AGC for TDMA radio systems |
BR9507859A (pt) | 1994-05-02 | 1997-09-16 | Motorola Inc | Aparelho e método de registro flexivel de múltiplos subcanais |
US5677909A (en) | 1994-05-11 | 1997-10-14 | Spectrix Corporation | Apparatus for exchanging data between a central station and a plurality of wireless remote stations on a time divided commnication channel |
US6157343A (en) * | 1996-09-09 | 2000-12-05 | Telefonaktiebolaget Lm Ericsson | Antenna array calibration |
DE4425713C1 (de) | 1994-07-20 | 1995-04-20 | Inst Rundfunktechnik Gmbh | Verfahren zur Vielträger Modulation und Demodulation von digital codierten Daten |
FR2724084B1 (fr) | 1994-08-31 | 1997-01-03 | Alcatel Mobile Comm France | Systeme de transmission d'informations par un canal de transmission variant dans le temps, et equipements d'emission et de reception correspondants |
MY120873A (en) | 1994-09-30 | 2005-12-30 | Qualcomm Inc | Multipath search processor for a spread spectrum multiple access communication system |
US5710768A (en) | 1994-09-30 | 1998-01-20 | Qualcomm Incorporated | Method of searching for a bursty signal |
ES2103190B1 (es) * | 1994-11-30 | 1998-04-01 | Alcatel Standard Electrica | Procedimiento de alineamiento de rafagas. |
JP3231575B2 (ja) | 1995-04-18 | 2001-11-26 | 三菱電機株式会社 | 無線データ伝送装置 |
KR0155818B1 (ko) | 1995-04-29 | 1998-11-16 | 김광호 | 다중 반송파 전송시스템에서 적응형 전력 분배 방법 및 장치 |
US5606729A (en) | 1995-06-21 | 1997-02-25 | Motorola, Inc. | Method and apparatus for implementing a received signal quality measurement in a radio communication system |
US5729542A (en) | 1995-06-28 | 1998-03-17 | Motorola, Inc. | Method and apparatus for communication system access |
US7929498B2 (en) | 1995-06-30 | 2011-04-19 | Interdigital Technology Corporation | Adaptive forward power control and adaptive reverse power control for spread-spectrum communications |
US5638369A (en) | 1995-07-05 | 1997-06-10 | Motorola, Inc. | Method and apparatus for inbound channel selection in a communication system |
DE69535033T2 (de) | 1995-07-11 | 2007-03-08 | Alcatel | Zuweisung von Kapazität bei OFDM |
GB9514659D0 (en) | 1995-07-18 | 1995-09-13 | Northern Telecom Ltd | An antenna downlink beamsteering arrangement |
US5867539A (en) | 1995-07-21 | 1999-02-02 | Hitachi America, Ltd. | Methods and apparatus for reducing the effect of impulse noise on receivers |
JP2802255B2 (ja) | 1995-09-06 | 1998-09-24 | 株式会社次世代デジタルテレビジョン放送システム研究所 | 直交周波数分割多重伝送方式及びそれを用いる送信装置と受信装置 |
GB9521739D0 (en) | 1995-10-24 | 1996-01-03 | Nat Transcommunications Ltd | Decoding carriers encoded using orthogonal frequency division multiplexing |
US6005876A (en) | 1996-03-08 | 1999-12-21 | At&T Corp | Method and apparatus for mobile data communication |
US5699365A (en) | 1996-03-27 | 1997-12-16 | Motorola, Inc. | Apparatus and method for adaptive forward error correction in data communications |
US5924015A (en) | 1996-04-30 | 1999-07-13 | Trw Inc | Power control method and apparatus for satellite based telecommunications system |
JPH09307526A (ja) | 1996-05-17 | 1997-11-28 | Mitsubishi Electric Corp | デジタル放送受信機 |
EP0807989B1 (en) | 1996-05-17 | 2001-06-27 | Motorola Ltd | Devices for transmitter path weights and methods therefor |
US5822374A (en) | 1996-06-07 | 1998-10-13 | Motorola, Inc. | Method for fine gains adjustment in an ADSL communications system |
FI101920B1 (fi) | 1996-06-07 | 1998-09-15 | Nokia Telecommunications Oy | Kanavanvarausmenetelmä pakettiverkkoa varten |
US6798735B1 (en) | 1996-06-12 | 2004-09-28 | Aware, Inc. | Adaptive allocation for variable bandwidth multicarrier communication |
US6072779A (en) | 1997-06-12 | 2000-06-06 | Aware, Inc. | Adaptive allocation for variable bandwidth multicarrier communication |
US6097771A (en) | 1996-07-01 | 2000-08-01 | Lucent Technologies Inc. | Wireless communications system having a layered space-time architecture employing multi-element antennas |
JPH1051402A (ja) | 1996-08-01 | 1998-02-20 | Nec Corp | 受信電界検出回路 |
EP0931388B1 (en) | 1996-08-29 | 2003-11-05 | Cisco Technology, Inc. | Spatio-temporal processing for communication |
JP2001359152A (ja) | 2000-06-14 | 2001-12-26 | Sony Corp | 無線通信システム、無線基地局装置、無線移動局装置、無線ゾーン割当て方法及び無線通信方法 |
JP2846860B2 (ja) | 1996-10-01 | 1999-01-13 | ユニデン株式会社 | スペクトル拡散通信方式を用いた送信機、受信機、通信システム及び通信方法 |
US6275543B1 (en) | 1996-10-11 | 2001-08-14 | Arraycomm, Inc. | Method for reference signal generation in the presence of frequency offsets in a communications station with spatial processing |
US5886988A (en) | 1996-10-23 | 1999-03-23 | Arraycomm, Inc. | Channel assignment and call admission control for spatial division multiple access communication systems |
US6049548A (en) | 1996-11-22 | 2000-04-11 | Stanford Telecommunications, Inc. | Multi-access CS-P/CD-E system and protocols on satellite channels applicable to a group of mobile users in close proximity |
IL130034A (en) | 1996-11-26 | 2003-04-10 | Trw Inc | Cochannel signal processing system |
US6232918B1 (en) * | 1997-01-08 | 2001-05-15 | Us Wireless Corporation | Antenna array calibration in wireless communication systems |
US6084915A (en) | 1997-03-03 | 2000-07-04 | 3Com Corporation | Signaling method having mixed-base shell map indices |
US6175550B1 (en) | 1997-04-01 | 2001-01-16 | Lucent Technologies, Inc. | Orthogonal frequency division multiplexing system with dynamically scalable operating parameters and method thereof |
KR100267856B1 (ko) | 1997-04-16 | 2000-10-16 | 윤종용 | 이동통신시스템에서오버헤드채널관리방법및장치 |
US6308080B1 (en) | 1997-05-16 | 2001-10-23 | Texas Instruments Incorporated | Power control in point-to-multipoint systems |
FR2764143A1 (fr) | 1997-05-27 | 1998-12-04 | Philips Electronics Nv | Procede de determination d'un format d'emission de symboles dans un systeme de transmission et systeme |
JP2856198B2 (ja) * | 1997-06-11 | 1999-02-10 | 日本電気株式会社 | スペクトラム拡散受信機 |
US5867478A (en) | 1997-06-20 | 1999-02-02 | Motorola, Inc. | Synchronous coherent orthogonal frequency division multiplexing system, method, software and device |
US6067458A (en) | 1997-07-01 | 2000-05-23 | Qualcomm Incorporated | Method and apparatus for pre-transmission power control using lower rate for high rate communication |
US6108369A (en) | 1997-07-11 | 2000-08-22 | Telefonaktiebolaget Lm Ericsson | Channelization code allocation for radio communication systems |
US6333953B1 (en) | 1997-07-21 | 2001-12-25 | Ericsson Inc. | System and methods for selecting an appropriate detection technique in a radiocommunication system |
EP0895387A1 (de) | 1997-07-28 | 1999-02-03 | Deutsche Thomson-Brandt Gmbh | Erkennung des Übertragungsmodus eines DVB-Signales |
US6141542A (en) | 1997-07-31 | 2000-10-31 | Motorola, Inc. | Method and apparatus for controlling transmit diversity in a communication system |
CN1086061C (zh) | 1997-08-12 | 2002-06-05 | 鸿海精密工业股份有限公司 | 电连接器的固持装置 |
US6131016A (en) | 1997-08-27 | 2000-10-10 | At&T Corp | Method and apparatus for enhancing communication reception at a wireless communication terminal |
EP0899896A1 (de) | 1997-08-27 | 1999-03-03 | Siemens Aktiengesellschaft | Verfahren und Einrichtung zur Schätzung räumlicher Parameter von Überstragungskanälen |
JP2991167B2 (ja) | 1997-08-27 | 1999-12-20 | 三菱電機株式会社 | Tdma可変スロット割当方法 |
US6167031A (en) | 1997-08-29 | 2000-12-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Method for selecting a combination of modulation and channel coding schemes in a digital communication system |
US6590928B1 (en) | 1997-09-17 | 2003-07-08 | Telefonaktiebolaget Lm Ericsson (Publ) | Frequency hopping piconets in an uncoordinated wireless multi-user system |
AUPO932297A0 (en) | 1997-09-19 | 1997-10-09 | Commonwealth Scientific And Industrial Research Organisation | Medium access control protocol for data communications |
KR100234329B1 (ko) | 1997-09-30 | 1999-12-15 | 윤종용 | Ofdm 시스템 수신기의 fft 윈도우 위치 복원장치 및 그 방법_ |
US6178196B1 (en) | 1997-10-06 | 2001-01-23 | At&T Corp. | Combined interference cancellation and maximum likelihood decoding of space-time block codes |
US6574211B2 (en) | 1997-11-03 | 2003-06-03 | Qualcomm Incorporated | Method and apparatus for high rate packet data transmission |
US6377812B1 (en) | 1997-11-20 | 2002-04-23 | University Of Maryland | Combined power control and space-time diversity in mobile cellular communications |
US6122247A (en) | 1997-11-24 | 2000-09-19 | Motorola Inc. | Method for reallocating data in a discrete multi-tone communication system |
US5936569A (en) | 1997-12-02 | 1999-08-10 | Nokia Telecommunications Oy | Method and arrangement for adjusting antenna pattern |
US6084917A (en) | 1997-12-16 | 2000-07-04 | Integrated Telecom Express | Circuit for configuring and dynamically adapting data and energy parameters in a multi-channel communications system |
US6088387A (en) | 1997-12-31 | 2000-07-11 | At&T Corp. | Multi-channel parallel/serial concatenated convolutional codes and trellis coded modulation encoder/decoder |
EP0929172B1 (en) | 1998-01-06 | 2010-06-02 | MOSAID Technologies Inc. | Multicarrier modulation system, with variable symbol rates |
US6608874B1 (en) | 1998-01-12 | 2003-08-19 | Hughes Electronics Corporation | Method and apparatus for quadrature multi-pulse modulation of data for spectrally efficient communication |
US5982327A (en) | 1998-01-12 | 1999-11-09 | Motorola, Inc. | Adaptive array method, device, base station and subscriber unit |
US5973638A (en) | 1998-01-30 | 1999-10-26 | Micronetics Wireless, Inc. | Smart antenna channel simulator and test system |
EP0938208A1 (en) | 1998-02-22 | 1999-08-25 | Sony International (Europe) GmbH | Multicarrier transmission, compatible with the existing GSM system |
WO1999044379A1 (en) | 1998-02-27 | 1999-09-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Multiple access categorization for mobile station |
JP3082756B2 (ja) | 1998-02-27 | 2000-08-28 | 日本電気株式会社 | マルチキャリア伝送システム及びその方法 |
US6141388A (en) | 1998-03-11 | 2000-10-31 | Ericsson Inc. | Received signal quality determination method and systems for convolutionally encoded communication channels |
US6058107A (en) | 1998-04-08 | 2000-05-02 | Motorola, Inc. | Method for updating forward power control in a communication system |
US6317466B1 (en) | 1998-04-15 | 2001-11-13 | Lucent Technologies Inc. | Wireless communications system having a space-time architecture employing multi-element antennas at both the transmitter and receiver |
US6615024B1 (en) * | 1998-05-01 | 2003-09-02 | Arraycomm, Inc. | Method and apparatus for determining signatures for calibrating a communication station having an antenna array |
US7123628B1 (en) | 1998-05-06 | 2006-10-17 | Lg Electronics Inc. | Communication system with improved medium access control sub-layer |
US6205410B1 (en) | 1998-06-01 | 2001-03-20 | Globespan Semiconductor, Inc. | System and method for bit loading with optimal margin assignment |
DE69937828D1 (de) | 1998-06-19 | 2008-02-07 | Ericsson Telefon Ab L M | Rahmensynchronisierungsverfahren und -einrichtungen |
US6795424B1 (en) | 1998-06-30 | 2004-09-21 | Tellabs Operations, Inc. | Method and apparatus for interference suppression in orthogonal frequency division multiplexed (OFDM) wireless communication systems |
JP2000092009A (ja) | 1998-07-13 | 2000-03-31 | Sony Corp | 通信方法、送信機及び受信機 |
AU4934399A (en) | 1998-07-16 | 2000-02-07 | Samsung Electronics Co., Ltd. | Processing packet data in mobile communication system |
US6154443A (en) | 1998-08-11 | 2000-11-28 | Industrial Technology Research Institute | FFT-based CDMA RAKE receiver system and method |
CN1237746C (zh) | 1998-08-18 | 2006-01-18 | 束达网络公司 | 多层载波离散多音通信技术 |
KR100429540B1 (ko) | 1998-08-26 | 2004-08-09 | 삼성전자주식회사 | 이동통신시스템의패킷데이터통신장치및방법 |
US6515617B1 (en) | 1998-09-01 | 2003-02-04 | Hughes Electronics Corporation | Method and system for position determination using geostationary earth orbit satellite |
DE19842712C1 (de) | 1998-09-17 | 2000-05-04 | Siemens Ag | Verfahren und Anordnung zur Minimierung des Autokorrelationsfehlers bei der Demodulation eines Spreizspektrum-Signals unter Mehrwegeausbreitung |
US6292917B1 (en) | 1998-09-30 | 2001-09-18 | Agere Systems Guardian Corp. | Unequal error protection for digital broadcasting using channel classification |
EP0993212B1 (en) | 1998-10-05 | 2006-05-24 | Sony Deutschland GmbH | Random access channel partitioning scheme for CDMA system |
EP0993211B1 (en) | 1998-10-05 | 2005-01-12 | Sony International (Europe) GmbH | Random access channel partitioning scheme for CDMA system |
US6711121B1 (en) | 1998-10-09 | 2004-03-23 | At&T Corp. | Orthogonal code division multiplexing for twisted pair channels |
DE59902484D1 (de) | 1998-10-27 | 2002-10-02 | Siemens Ag | Kanalzuweisungsverfahren und vorrichtung für kodierte und kombinierte informationssätze |
JP4287536B2 (ja) | 1998-11-06 | 2009-07-01 | パナソニック株式会社 | Ofdm送受信装置及びofdm送受信方法 |
ES2185244T3 (es) | 1998-12-03 | 2003-04-16 | Fraunhofer Ges Forschung | Aparato y procedimiento para transmitir informacion y aparato y procedimiento para recibir informacion. |
GB9827182D0 (en) | 1998-12-10 | 1999-02-03 | Philips Electronics Nv | Radio communication system |
FI108588B (fi) | 1998-12-15 | 2002-02-15 | Nokia Corp | Menetelmä ja radiojärjestelmä digitaalisen signaalin siirtoon |
JP2000244441A (ja) | 1998-12-22 | 2000-09-08 | Matsushita Electric Ind Co Ltd | Ofdm送受信装置 |
US6266528B1 (en) | 1998-12-23 | 2001-07-24 | Arraycomm, Inc. | Performance monitor for antenna arrays |
US6310909B1 (en) | 1998-12-23 | 2001-10-30 | Broadcom Corporation | DSL rate adaptation |
US6463290B1 (en) | 1999-01-08 | 2002-10-08 | Trueposition, Inc. | Mobile-assisted network based techniques for improving accuracy of wireless location system |
RU2152132C1 (ru) | 1999-01-26 | 2000-06-27 | Государственное унитарное предприятие Воронежский научно-исследовательский институт связи | Линия радиосвязи с пространственной модуляцией |
JP3619729B2 (ja) | 2000-01-19 | 2005-02-16 | 松下電器産業株式会社 | 無線受信装置および無線受信方法 |
KR100651457B1 (ko) | 1999-02-13 | 2006-11-28 | 삼성전자주식회사 | 부호분할다중접속 이동통신시스템의 불연속 전송모드에서 연속적인 외부순환 전력제어장치 및 방법 |
US6574267B1 (en) | 1999-03-22 | 2003-06-03 | Golden Bridge Technology, Inc. | Rach ramp-up acknowledgement |
US6363267B1 (en) | 1999-04-07 | 2002-03-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Mobile terminal decode failure procedure in a wireless local area network |
US6346910B1 (en) * | 1999-04-07 | 2002-02-12 | Tei Ito | Automatic array calibration scheme for wireless point-to-multipoint communication networks |
EP1075093A1 (en) | 1999-08-02 | 2001-02-07 | Interuniversitair Micro-Elektronica Centrum Vzw | A method and apparatus for multi-user transmission |
US6532562B1 (en) | 1999-05-21 | 2003-03-11 | Microsoft Corp | Receiver-driven layered error correction multicast over heterogeneous packet networks |
US6594798B1 (en) | 1999-05-21 | 2003-07-15 | Microsoft Corporation | Receiver-driven layered error correction multicast over heterogeneous packet networks |
US6594473B1 (en) | 1999-05-28 | 2003-07-15 | Texas Instruments Incorporated | Wireless system with transmitter having multiple transmit antennas and combining open loop and closed loop transmit diversities |
KR100605978B1 (ko) | 1999-05-29 | 2006-07-28 | 삼성전자주식회사 | 부호분할다중접속 이동통신시스템의 불연속 전송모드에서 연속적인 외부순환 전력제어를 위한 송수신 장치 및 방법 |
US7072410B1 (en) | 1999-06-01 | 2006-07-04 | Peter Monsen | Multiple access system and method for multibeam digital radio systems |
US6141567A (en) | 1999-06-07 | 2000-10-31 | Arraycomm, Inc. | Apparatus and method for beamforming in a changing-interference environment |
US6385264B1 (en) | 1999-06-08 | 2002-05-07 | Qualcomm Incorporated | Method and apparatus for mitigating interference between base stations in a wideband CDMA system |
US6976262B1 (en) | 1999-06-14 | 2005-12-13 | Sun Microsystems, Inc. | Web-based enterprise management with multiple repository capability |
WO2001005067A1 (en) | 1999-07-08 | 2001-01-18 | Samsung Electronics Co., Ltd | Data rate detection device and method for a mobile communication system |
US6163296A (en) * | 1999-07-12 | 2000-12-19 | Lockheed Martin Corp. | Calibration and integrated beam control/conditioning system for phased-array antennas |
RU2168278C2 (ru) | 1999-07-16 | 2001-05-27 | Корпорация "Самсунг Электроникс" | Способ произвольного доступа абонентов мобильной станции |
GB9917512D0 (en) * | 1999-07-26 | 1999-09-29 | Univ Southampton | Data and/or video communications |
US6532225B1 (en) | 1999-07-27 | 2003-03-11 | At&T Corp | Medium access control layer for packetized wireless systems |
JP2001044930A (ja) | 1999-07-30 | 2001-02-16 | Matsushita Electric Ind Co Ltd | 無線通信装置および無線通信方法 |
US6067290A (en) | 1999-07-30 | 2000-05-23 | Gigabit Wireless, Inc. | Spatial multiplexing in a cellular network |
US6735188B1 (en) | 1999-08-27 | 2004-05-11 | Tachyon, Inc. | Channel encoding and decoding method and apparatus |
US6278726B1 (en) | 1999-09-10 | 2001-08-21 | Interdigital Technology Corporation | Interference cancellation in a spread spectrum communication system |
US6115406A (en) | 1999-09-10 | 2000-09-05 | Interdigital Technology Corporation | Transmission using an antenna array in a CDMA communication system |
US6426971B1 (en) | 1999-09-13 | 2002-07-30 | Qualcomm Incorporated | System and method for accurately predicting signal to interference and noise ratio to improve communications system performance |
SG80071A1 (en) | 1999-09-24 | 2001-04-17 | Univ Singapore | Downlink beamforming method |
JP3421671B2 (ja) | 1999-09-30 | 2003-06-30 | 独立行政法人通信総合研究所 | 通信システム、選択装置、送信装置、受信装置、選択方法、送信方法、受信方法、および、情報記録媒体 |
KR100429529B1 (ko) | 1999-10-02 | 2004-05-03 | 삼성전자주식회사 | 부호분할다중접속 통신시스템의 제어채널신호를단속적으로 송수신하는 장치 및 방법 |
DE19950005A1 (de) | 1999-10-18 | 2001-04-19 | Bernhard Walke | Verfahren zum Betrieb drahtloser Basisstationen für paketvermittelnde Funksysteme mit garantierter Dienstgüte |
DE19951525C2 (de) | 1999-10-26 | 2002-01-24 | Siemens Ag | Verfahren zum Kalibrieren einer elektronisch phasengesteuerten Gruppenantenne in Funk-Kommunikationssystemen |
US6492942B1 (en) | 1999-11-09 | 2002-12-10 | Com Dev International, Inc. | Content-based adaptive parasitic array antenna system |
JP3416597B2 (ja) | 1999-11-19 | 2003-06-16 | 三洋電機株式会社 | 無線基地局 |
US7088671B1 (en) | 1999-11-24 | 2006-08-08 | Peter Monsen | Multiple access technique for downlink multibeam digital radio systems |
US7110785B1 (en) | 1999-12-03 | 2006-09-19 | Nortel Networks Limited | Performing power control in a mobile communications system |
US6298092B1 (en) | 1999-12-15 | 2001-10-02 | Iospan Wireless, Inc. | Methods of controlling communication parameters of wireless systems |
US6351499B1 (en) | 1999-12-15 | 2002-02-26 | Iospan Wireless, Inc. | Method and wireless systems using multiple antennas and adaptive control for maximizing a communication parameter |
EP1109326A1 (en) | 1999-12-15 | 2001-06-20 | Lucent Technologies Inc. | Peamble detector for a CDMA receiver |
JP3975629B2 (ja) | 1999-12-16 | 2007-09-12 | ソニー株式会社 | 画像復号装置及び画像復号方法 |
US6298035B1 (en) | 1999-12-21 | 2001-10-02 | Nokia Networks Oy | Estimation of two propagation channels in OFDM |
JP2001186051A (ja) | 1999-12-24 | 2001-07-06 | Toshiba Corp | データ信号判定回路及び方法 |
AU755728B2 (en) | 1999-12-28 | 2002-12-19 | Ntt Docomo, Inc. | Path search method, channel estimating method and communications device |
US6718160B2 (en) | 1999-12-29 | 2004-04-06 | Airnet Communications Corp. | Automatic configuration of backhaul and groundlink frequencies in a wireless repeater |
US6888809B1 (en) | 2000-01-13 | 2005-05-03 | Lucent Technologies Inc. | Space-time processing for multiple-input, multiple-output, wireless systems |
US7254171B2 (en) | 2000-01-20 | 2007-08-07 | Nortel Networks Limited | Equaliser for digital communications systems and method of equalisation |
KR100325367B1 (ko) | 2000-01-28 | 2002-03-04 | 박태진 | 직교 주파수 분할 다중 통신 시스템에서의 비트 오율 측정장치및 방법 |
JP2001217896A (ja) | 2000-01-31 | 2001-08-10 | Matsushita Electric Works Ltd | 無線データ通信システム |
US7003044B2 (en) | 2000-02-01 | 2006-02-21 | Sasken Communication Technologies Ltd. | Method for allocating bits and power in multi-carrier communication system |
FI117465B (fi) | 2000-02-03 | 2006-10-31 | Danisco Sweeteners Oy | Menetelmä pureskeltavien ytimien kovapinnoittamiseksi |
US6868120B2 (en) | 2000-02-08 | 2005-03-15 | Clearwire Corporation | Real-time system for measuring the Ricean K-factor |
US6704374B1 (en) | 2000-02-16 | 2004-03-09 | Thomson Licensing S.A. | Local oscillator frequency correction in an orthogonal frequency division multiplexing system |
DE10008653A1 (de) | 2000-02-24 | 2001-09-06 | Siemens Ag | Verbesserungen an einem Funkkommunikationssystem |
US6956814B1 (en) | 2000-02-29 | 2005-10-18 | Worldspace Corporation | Method and apparatus for mobile platform reception and synchronization in direct digital satellite broadcast system |
JP2001244879A (ja) | 2000-03-02 | 2001-09-07 | Matsushita Electric Ind Co Ltd | 送信電力制御装置及びその方法 |
US6963546B2 (en) | 2000-03-15 | 2005-11-08 | Interdigital Technology Corp. | Multi-user detection using an adaptive combination of joint detection and successive interface cancellation |
EP1137217A1 (en) | 2000-03-20 | 2001-09-26 | Telefonaktiebolaget Lm Ericsson | ARQ parameter negociation in a data packet transmission system using link adaptation |
US6473467B1 (en) | 2000-03-22 | 2002-10-29 | Qualcomm Incorporated | Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system |
US20020154705A1 (en) | 2000-03-22 | 2002-10-24 | Walton Jay R. | High efficiency high performance communications system employing multi-carrier modulation |
US6952454B1 (en) | 2000-03-22 | 2005-10-04 | Qualcomm, Incorporated | Multiplexing of real time services and non-real time services for OFDM systems |
DE10014676C2 (de) | 2000-03-24 | 2002-02-07 | Polytrax Inf Technology Ag | Datenübertragung über ein Stromversorgungsnetz |
DE60035335T2 (de) | 2000-04-04 | 2008-03-13 | Sony Deutschland Gmbh | Ereignisgesteuerte Änderung der Zugriffsdienstklasse in einem Zufallzugriffskanal |
DE60021772T2 (de) | 2000-04-07 | 2006-04-20 | Nokia Corp. | Verfahren und vorrichtung zur übertragung mit mehreren antennen |
US7289570B2 (en) | 2000-04-10 | 2007-10-30 | Texas Instruments Incorporated | Wireless communications |
US6757263B1 (en) | 2000-04-13 | 2004-06-29 | Motorola, Inc. | Wireless repeating subscriber units |
ATE513401T1 (de) | 2000-04-18 | 2011-07-15 | Aware Inc | Mehrträgersystem mit einer mehrzahl von snr- abständen |
US6751199B1 (en) | 2000-04-24 | 2004-06-15 | Qualcomm Incorporated | Method and apparatus for a rate control in a high data rate communication system |
JP3414357B2 (ja) | 2000-04-25 | 2003-06-09 | 日本電気株式会社 | Cdma移動通信システムにおける送信電力制御方式 |
EP1455493B1 (en) | 2000-04-25 | 2005-11-30 | Nortel Networks Limited | Radio telecommunications system with reduced delays for data transmission |
US7068628B2 (en) | 2000-05-22 | 2006-06-27 | At&T Corp. | MIMO OFDM system |
US7139324B1 (en) | 2000-06-02 | 2006-11-21 | Nokia Networks Oy | Closed loop feedback system for improved down link performance |
WO2001097411A1 (en) | 2000-06-12 | 2001-12-20 | Samsung Electronics Co., Ltd | Method of assigning an uplink random access channel in a cdma mobile communication system |
US6744811B1 (en) | 2000-06-12 | 2004-06-01 | Actelis Networks Inc. | Bandwidth management for DSL modem pool |
US7248841B2 (en) * | 2000-06-13 | 2007-07-24 | Agee Brian G | Method and apparatus for optimization of wireless multipoint electromagnetic communication networks |
US6760313B1 (en) | 2000-06-19 | 2004-07-06 | Qualcomm Incorporated | Method and apparatus for adaptive rate selection in a communication system |
SE519303C2 (sv) | 2000-06-20 | 2003-02-11 | Ericsson Telefon Ab L M | Anordning för smalbandig kommunikation i ett multicarrier- system |
US6891858B1 (en) | 2000-06-30 | 2005-05-10 | Cisco Technology Inc. | Dynamic modulation of modulation profiles for communication channels in an access network |
WO2002003557A1 (en) | 2000-06-30 | 2002-01-10 | Iospan Wireless, Inc. | Method and system for mode adaptation in wireless communication |
CN1140147C (zh) | 2000-07-01 | 2004-02-25 | 信息产业部电信传输研究所 | 一种外环功率控制的方法和系统 |
WO2002003573A1 (fr) | 2000-07-03 | 2002-01-10 | Matsushita Electric Industrial Co., Ltd. | Unite de station de base et procede de radiocommunication |
EP2262151B1 (en) | 2000-07-05 | 2017-10-04 | Sony Deutschland Gmbh | Pilot pattern design for multiple antennas in an OFDM system |
FI109393B (fi) | 2000-07-14 | 2002-07-15 | Nokia Corp | Menetelmä mediavirran enkoodaamiseksi skaalautuvasti, skaalautuva enkooderi ja päätelaite |
WO2002007327A1 (en) | 2000-07-17 | 2002-01-24 | Koninklijke Philips Electronics N.V. | Coding of data stream |
KR100493152B1 (ko) | 2000-07-21 | 2005-06-02 | 삼성전자주식회사 | 이동 통신 시스템에서의 전송 안테나 다이버시티 방법 및이를 위한 기지국 장치 및 이동국 장치 |
EP1176750A1 (en) | 2000-07-25 | 2002-01-30 | Telefonaktiebolaget L M Ericsson (Publ) | Link quality determination of a transmission link in an OFDM transmission system |
EP1178641B1 (en) | 2000-08-01 | 2007-07-25 | Sony Deutschland GmbH | Frequency reuse scheme for OFDM systems |
ATE446663T1 (de) | 2000-08-03 | 2009-11-15 | Infineon Technologies Ag | Dynamisch, rekonfigurierbares, universelles sendersystem |
US6920192B1 (en) | 2000-08-03 | 2005-07-19 | Lucent Technologies Inc. | Adaptive antenna array methods and apparatus for use in a multi-access wireless communication system |
US6582088B2 (en) | 2000-08-10 | 2003-06-24 | Benq Corporation | Optical path folding apparatus |
DE60037465T2 (de) | 2000-08-10 | 2008-12-04 | Fujitsu Ltd., Kawasaki | Vorrichtung zur Kommunikation mit Diversität |
EP1182799A3 (en) | 2000-08-22 | 2002-06-26 | Lucent Technologies Inc. | Method for enhancing mobile cdma communications using space-time transmit diversity |
KR100526499B1 (ko) | 2000-08-22 | 2005-11-08 | 삼성전자주식회사 | 두 개 이상 안테나를 사용하는 안테나 전송 다이버시티방법 및 장치 |
IT1318790B1 (it) | 2000-08-29 | 2003-09-10 | Cit Alcatel | Metodo per gestire il cambio di allocazione dei time-slot in reti adanello ms-spring di tipo transoceanico. |
US7009931B2 (en) | 2000-09-01 | 2006-03-07 | Nortel Networks Limited | Synchronization in a multiple-input/multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system for wireless applications |
US7233625B2 (en) | 2000-09-01 | 2007-06-19 | Nortel Networks Limited | Preamble design for multiple input—multiple output (MIMO), orthogonal frequency division multiplexing (OFDM) system |
US6850481B2 (en) | 2000-09-01 | 2005-02-01 | Nortel Networks Limited | Channels estimation for multiple input—multiple output, orthogonal frequency division multiplexing (OFDM) system |
US6937592B1 (en) | 2000-09-01 | 2005-08-30 | Intel Corporation | Wireless communications system that supports multiple modes of operation |
US6985434B2 (en) | 2000-09-01 | 2006-01-10 | Nortel Networks Limited | Adaptive time diversity and spatial diversity for OFDM |
FR2814014B1 (fr) | 2000-09-14 | 2002-10-11 | Mitsubishi Electric Inf Tech | Methode de detection multi-utilisateur |
US6802035B2 (en) | 2000-09-19 | 2004-10-05 | Intel Corporation | System and method of dynamically optimizing a transmission mode of wirelessly transmitted information |
US6760882B1 (en) | 2000-09-19 | 2004-07-06 | Intel Corporation | Mode selection for data transmission in wireless communication channels based on statistical parameters |
US7062294B1 (en) | 2000-09-29 | 2006-06-13 | Arraycomm, Llc. | Downlink transmission in a wireless data communication system having a base station with a smart antenna system |
US7110378B2 (en) | 2000-10-03 | 2006-09-19 | Wisconsin Alumni Research Foundation | Channel aware optimal space-time signaling for wireless communication over wideband multipath channels |
US7016296B2 (en) | 2000-10-16 | 2006-03-21 | Broadcom Corporation | Adaptive modulation for fixed wireless link in cable transmission system |
US6907270B1 (en) | 2000-10-23 | 2005-06-14 | Qualcomm Inc. | Method and apparatus for reduced rank channel estimation in a communications system |
US6369758B1 (en) | 2000-11-01 | 2002-04-09 | Unique Broadband Systems, Inc. | Adaptive antenna array for mobile communication |
JP3553038B2 (ja) | 2000-11-06 | 2004-08-11 | 株式会社エヌ・ティ・ティ・ドコモ | 信号送信方法、信号受信方法、送信装置、受信装置および記録媒体 |
US6768727B1 (en) | 2000-11-09 | 2004-07-27 | Ericsson Inc. | Fast forward link power control for CDMA system |
US8634481B1 (en) | 2000-11-16 | 2014-01-21 | Alcatel Lucent | Feedback technique for wireless systems with multiple transmit and receive antennas |
US7006464B1 (en) | 2000-11-17 | 2006-02-28 | Lucent Technologies Inc. | Downlink and uplink channel structures for downlink shared channel system |
US6980601B2 (en) | 2000-11-17 | 2005-12-27 | Broadcom Corporation | Rate adaptation and parameter optimization for multi-band single carrier transmission |
JP3695316B2 (ja) | 2000-11-24 | 2005-09-14 | 株式会社日本自動車部品総合研究所 | スペクトラム拡散受信機の相関検出器 |
US6751480B2 (en) | 2000-12-01 | 2004-06-15 | Lucent Technologies Inc. | Method for simultaneously conveying information to multiple mobiles with multiple antennas |
JP4505677B2 (ja) | 2000-12-06 | 2010-07-21 | ソフトバンクテレコム株式会社 | 送信ダイバーシチ装置および送信電力調整方法 |
US6952426B2 (en) | 2000-12-07 | 2005-10-04 | Nortel Networks Limited | Method and apparatus for the transmission of short data bursts in CDMA/HDR networks |
KR100353641B1 (ko) | 2000-12-21 | 2002-09-28 | 삼성전자 주식회사 | 부호분할다중접속 이동통신시스템의 기지국 전송 안테나다이버시티 장치 및 방법 |
US6850498B2 (en) | 2000-12-22 | 2005-02-01 | Intel Corporation | Method and system for evaluating a wireless link |
US6987819B2 (en) | 2000-12-29 | 2006-01-17 | Motorola, Inc. | Method and device for multiple input/multiple output transmit and receive weights for equal-rate data streams |
US20020085641A1 (en) | 2000-12-29 | 2002-07-04 | Motorola, Inc | Method and system for interference averaging in a wireless communication system |
US7050510B2 (en) | 2000-12-29 | 2006-05-23 | Lucent Technologies Inc. | Open-loop diversity technique for systems employing four transmitter antennas |
US6731668B2 (en) | 2001-01-05 | 2004-05-04 | Qualcomm Incorporated | Method and system for increased bandwidth efficiency in multiple input—multiple output channels |
EP1223776A1 (en) | 2001-01-12 | 2002-07-17 | Siemens Information and Communication Networks S.p.A. | A collision free access scheduling in cellular TDMA-CDMA networks |
US6693992B2 (en) | 2001-01-16 | 2004-02-17 | Mindspeed Technologies | Line probe signal and method of use |
US6801790B2 (en) | 2001-01-17 | 2004-10-05 | Lucent Technologies Inc. | Structure for multiple antenna configurations |
US7164669B2 (en) | 2001-01-19 | 2007-01-16 | Adaptix, Inc. | Multi-carrier communication with time division multiplexing and carrier-selective loading |
US7054662B2 (en) | 2001-01-24 | 2006-05-30 | Qualcomm, Inc. | Method and system for forward link beam forming in wireless communications |
JP2002232943A (ja) | 2001-01-29 | 2002-08-16 | Sony Corp | データ送信処理方法、データ受信処理方法、送信機、受信機、およびセルラー無線通信システム |
GB0102316D0 (en) | 2001-01-30 | 2001-03-14 | Koninkl Philips Electronics Nv | Radio communication system |
US6961388B2 (en) | 2001-02-01 | 2005-11-01 | Qualcomm, Incorporated | Coding scheme for a wireless communication system |
US6885654B2 (en) | 2001-02-06 | 2005-04-26 | Interdigital Technology Corporation | Low complexity data detection using fast fourier transform of channel correlation matrix |
US7120134B2 (en) | 2001-02-15 | 2006-10-10 | Qualcomm, Incorporated | Reverse link channel architecture for a wireless communication system |
US6975868B2 (en) | 2001-02-21 | 2005-12-13 | Qualcomm Incorporated | Method and apparatus for IS-95B reverse link supplemental code channel frame validation and fundamental code channel rate decision improvement |
US7006483B2 (en) | 2001-02-23 | 2006-02-28 | Ipr Licensing, Inc. | Qualifying available reverse link coding rates from access channel power setting |
WO2002069523A1 (en) | 2001-02-26 | 2002-09-06 | Magnolia Broadband, Inc | Smart antenna based spectrum multiplexing using a pilot signal |
GB0105019D0 (en) | 2001-03-01 | 2001-04-18 | Koninkl Philips Electronics Nv | Antenna diversity in a wireless local area network |
US7039125B2 (en) | 2001-03-12 | 2006-05-02 | Analog Devices, Inc. | Equalized SNR power back-off |
EP1241824A1 (en) | 2001-03-14 | 2002-09-18 | TELEFONAKTIEBOLAGET LM ERICSSON (publ) | Multiplexing method in a multicarrier transmit diversity system |
US6478422B1 (en) | 2001-03-19 | 2002-11-12 | Richard A. Hansen | Single bifocal custom shooters glasses |
US6771706B2 (en) | 2001-03-23 | 2004-08-03 | Qualcomm Incorporated | Method and apparatus for utilizing channel state information in a wireless communication system |
US7248638B1 (en) | 2001-03-23 | 2007-07-24 | Lsi Logic | Transmit antenna multi-mode tracking |
US7386076B2 (en) | 2001-03-29 | 2008-06-10 | Texas Instruments Incorporated | Space time encoded wireless communication system with multipath resolution receivers |
US8290098B2 (en) | 2001-03-30 | 2012-10-16 | Texas Instruments Incorporated | Closed loop multiple transmit, multiple receive antenna wireless communication system |
GB2373973B (en) | 2001-03-30 | 2003-06-11 | Toshiba Res Europ Ltd | Adaptive antenna |
US20020176485A1 (en) | 2001-04-03 | 2002-11-28 | Hudson John E. | Multi-cast communication system and method of estimating channel impulse responses therein |
US6785513B1 (en) | 2001-04-05 | 2004-08-31 | Cowave Networks, Inc. | Method and system for clustered wireless networks |
US6859503B2 (en) | 2001-04-07 | 2005-02-22 | Motorola, Inc. | Method and system in a transceiver for controlling a multiple-input, multiple-output communications channel |
KR100510434B1 (ko) | 2001-04-09 | 2005-08-26 | 니폰덴신뎅와 가부시키가이샤 | Ofdm신호전달 시스템, ofdm신호 송신장치 및ofdm신호 수신장치 |
FR2823620B1 (fr) | 2001-04-12 | 2003-08-15 | France Telecom | Procede de codage/decodage d'un flux de donnees numeriques codees avec entrelacement sur bits en emission et en reception multiple en presence d'interference intersymboles et systeme correspondant |
US7310304B2 (en) * | 2001-04-24 | 2007-12-18 | Bae Systems Information And Electronic Systems Integration Inc. | Estimating channel parameters in multi-input, multi-output (MIMO) systems |
US6611231B2 (en) | 2001-04-27 | 2003-08-26 | Vivato, Inc. | Wireless packet switched communication systems and networks using adaptively steered antenna arrays |
US7133459B2 (en) | 2001-05-01 | 2006-11-07 | Texas Instruments Incorporated | Space-time transmit diversity |
CN100446612C (zh) | 2001-05-04 | 2008-12-24 | 诺基亚公司 | 借助定向天线的许可控制 |
EP1255369A1 (en) | 2001-05-04 | 2002-11-06 | TELEFONAKTIEBOLAGET LM ERICSSON (publ) | Link adaptation for wireless MIMO transmission schemes |
DE10122788A1 (de) | 2001-05-10 | 2002-06-06 | Basf Ag | Verfahren der kristallisativen Reinigung einer Roh-Schmelze wenigstens eines Monomeren |
US6785341B2 (en) | 2001-05-11 | 2004-08-31 | Qualcomm Incorporated | Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information |
US6718493B1 (en) | 2001-05-17 | 2004-04-06 | 3Com Corporation | Method and apparatus for selection of ARQ parameters and estimation of improved communications |
US7072413B2 (en) | 2001-05-17 | 2006-07-04 | Qualcomm, Incorporated | Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion |
US7688899B2 (en) | 2001-05-17 | 2010-03-30 | Qualcomm Incorporated | Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion |
US6751187B2 (en) | 2001-05-17 | 2004-06-15 | Qualcomm Incorporated | Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel transmission |
US7492737B1 (en) | 2001-05-23 | 2009-02-17 | Nortel Networks Limited | Service-driven air interface protocol architecture for wireless systems |
ES2188373B1 (es) | 2001-05-25 | 2004-10-16 | Diseño De Sistemas En Silencio, S.A. | Procedimiento de optimizacion de la comunicacion para sistema de transmision digital ofdm multiusuario sobre red electrica. |
US6920194B2 (en) | 2001-05-29 | 2005-07-19 | Tioga Technologies, Ltd. | Method and system for detecting, timing, and correcting impulse noise |
US7158563B2 (en) | 2001-06-01 | 2007-01-02 | The Board Of Trustees Of The Leland Stanford Junior University | Dynamic digital communication system control |
GB2376315B (en) | 2001-06-05 | 2003-08-06 | 3Com Corp | Data bus system including posted reads and writes |
US20020183010A1 (en) | 2001-06-05 | 2002-12-05 | Catreux Severine E. | Wireless communication systems with adaptive channelization and link adaptation |
US20020193146A1 (en) | 2001-06-06 | 2002-12-19 | Mark Wallace | Method and apparatus for antenna diversity in a wireless communication system |
US7190749B2 (en) | 2001-06-06 | 2007-03-13 | Qualcomm Incorporated | Method and apparatus for canceling pilot interference in a wireless communication system |
EP1265411B1 (en) | 2001-06-08 | 2007-04-18 | Sony Deutschland GmbH | Multicarrier system with adaptive bit-wise interleaving |
US20030012308A1 (en) | 2001-06-13 | 2003-01-16 | Sampath Hemanth T. | Adaptive channel estimation for wireless systems |
US6842460B1 (en) | 2001-06-27 | 2005-01-11 | Nokia Corporation | Ad hoc network discovery menu |
WO2003010984A1 (en) | 2001-06-27 | 2003-02-06 | Nortel Networks Limited | Communication of control information in wireless communication systems |
US6751444B1 (en) | 2001-07-02 | 2004-06-15 | Broadstorm Telecommunications, Inc. | Method and apparatus for adaptive carrier allocation and power control in multi-carrier communication systems |
FR2827731B1 (fr) | 2001-07-23 | 2004-01-23 | Nexo | Haut-parleur a radiation directe et rayonnement optimise |
US6996380B2 (en) | 2001-07-26 | 2006-02-07 | Ericsson Inc. | Communication system employing transmit macro-diversity |
US6738020B1 (en) | 2001-07-31 | 2004-05-18 | Arraycomm, Inc. | Estimation of downlink transmission parameters in a radio communications system with an adaptive antenna array |
EP1284545B1 (en) | 2001-08-13 | 2008-07-02 | Motorola, Inc. | Transmit diversity wireless communication |
KR100703295B1 (ko) | 2001-08-18 | 2007-04-03 | 삼성전자주식회사 | 이동통신시스템에서 안테나 어레이를 이용한 데이터 송/수신 장치 및 방법 |
US20030039317A1 (en) | 2001-08-21 | 2003-02-27 | Taylor Douglas Hamilton | Method and apparatus for constructing a sub-carrier map |
FR2828981B1 (fr) | 2001-08-23 | 2004-05-21 | Commissariat Energie Atomique | Creuset a chauffage par induction et refroidissement par caloducs |
EP1289328A1 (en) | 2001-08-28 | 2003-03-05 | Lucent Technologies Inc. | A method of sending control information in a wireless telecommunications network, and corresponding apparatus |
US6990059B1 (en) | 2001-09-05 | 2006-01-24 | Cisco Technology, Inc. | Interference mitigation in a wireless communication system |
US7149254B2 (en) | 2001-09-06 | 2006-12-12 | Intel Corporation | Transmit signal preprocessing based on transmit antennae correlations for multiple antennae systems |
FR2829326A1 (fr) | 2001-09-06 | 2003-03-07 | France Telecom | Procede et systeme de reception iterative sous optimale pour systeme de transmission haut debit cdma |
US7133070B2 (en) | 2001-09-20 | 2006-11-07 | Eastman Kodak Company | System and method for deciding when to correct image-specific defects based on camera, scene, display and demographic data |
US7024163B1 (en) | 2001-09-28 | 2006-04-04 | Arraycomm Llc | Method and apparatus for adjusting feedback of a remote unit |
US6788948B2 (en) * | 2001-09-28 | 2004-09-07 | Arraycomm, Inc. | Frequency dependent calibration of a wideband radio system using narrowband channels |
US7035359B2 (en) | 2001-10-11 | 2006-04-25 | Telefonaktiebolaget L.M. Ericsson | Methods and apparatus for demodulation of a signal in a signal slot subject to a discontinuous interference signal |
US7248559B2 (en) | 2001-10-17 | 2007-07-24 | Nortel Networks Limited | Scattered pilot pattern and channel estimation method for MIMO-OFDM systems |
US7548506B2 (en) | 2001-10-17 | 2009-06-16 | Nortel Networks Limited | System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design |
US7773699B2 (en) | 2001-10-17 | 2010-08-10 | Nortel Networks Limited | Method and apparatus for channel quality measurements |
US7116652B2 (en) | 2001-10-18 | 2006-10-03 | Lucent Technologies Inc. | Rate control technique for layered architectures with multiple transmit and receive antennas |
KR20030032875A (ko) | 2001-10-19 | 2003-04-26 | 삼성전자주식회사 | 멀티캐스트 멀티미디어 방송 서비스를 제공하는 이동 통신시스템에서 순방향 데이터 채널 송신 전력을 제어하는장치 및 방법 |
US7349667B2 (en) | 2001-10-19 | 2008-03-25 | Texas Instruments Incorporated | Simplified noise estimation and/or beamforming for wireless communications |
CN1306722C (zh) | 2001-10-31 | 2007-03-21 | 松下电器产业株式会社 | 无线发射装置和无线通信方法 |
US7218684B2 (en) | 2001-11-02 | 2007-05-15 | Interdigital Technology Corporation | Method and system for code reuse and capacity enhancement using null steering |
US20030125040A1 (en) | 2001-11-06 | 2003-07-03 | Walton Jay R. | Multiple-access multiple-input multiple-output (MIMO) communication system |
US8018903B2 (en) | 2001-11-21 | 2011-09-13 | Texas Instruments Incorporated | Closed-loop transmit diversity scheme in frequency selective multipath channels |
CN101150556B (zh) | 2001-11-28 | 2015-11-25 | 富士通株式会社 | 正交频分复用传输方法、发射设备以及发射系统 |
US7346126B2 (en) | 2001-11-28 | 2008-03-18 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for channel estimation using plural channels |
US7263119B1 (en) | 2001-11-29 | 2007-08-28 | Marvell International Ltd. | Decoding method and apparatus |
US7154936B2 (en) | 2001-12-03 | 2006-12-26 | Qualcomm, Incorporated | Iterative detection and decoding for a MIMO-OFDM system |
US6760388B2 (en) | 2001-12-07 | 2004-07-06 | Qualcomm Incorporated | Time-domain transmit and receive processing with channel eigen-mode decomposition for MIMO systems |
US7155171B2 (en) | 2001-12-12 | 2006-12-26 | Saraband Wireless | Vector network analyzer applique for adaptive communications in wireless networks |
US20030112745A1 (en) | 2001-12-17 | 2003-06-19 | Xiangyang Zhuang | Method and system of operating a coded OFDM communication system |
US7099398B1 (en) | 2001-12-18 | 2006-08-29 | Vixs, Inc. | Method and apparatus for establishing non-standard data rates in a wireless communication system |
US7076514B2 (en) | 2001-12-18 | 2006-07-11 | Conexant, Inc. | Method and system for computing pre-equalizer coefficients |
JP4052835B2 (ja) | 2001-12-28 | 2008-02-27 | 株式会社日立製作所 | 多地点中継を行う無線伝送システム及びそれに使用する無線装置 |
US7573805B2 (en) | 2001-12-28 | 2009-08-11 | Motorola, Inc. | Data transmission and reception method and apparatus |
CA2366397A1 (en) | 2001-12-31 | 2003-06-30 | Tropic Networks Inc. | An interface for data transfer between integrated circuits |
US7209433B2 (en) | 2002-01-07 | 2007-04-24 | Hitachi, Ltd. | Channel estimation and compensation techniques for use in frequency division multiplexed systems |
US7020110B2 (en) | 2002-01-08 | 2006-03-28 | Qualcomm Incorporated | Resource allocation for MIMO-OFDM communication systems |
US7020482B2 (en) | 2002-01-23 | 2006-03-28 | Qualcomm Incorporated | Reallocation of excess power for full channel-state information (CSI) multiple-input, multiple-output (MIMO) systems |
US7058116B2 (en) | 2002-01-25 | 2006-06-06 | Intel Corporation | Receiver architecture for CDMA receiver downlink |
KR100547845B1 (ko) | 2002-02-07 | 2006-01-31 | 삼성전자주식회사 | 고속 순방향 패킷 접속 방식을 사용하는 통신 시스템에서서빙 고속 공통 제어 채널 셋 정보를 송수신하는 장치 및방법 |
US7046978B2 (en) | 2002-02-08 | 2006-05-16 | Qualcomm, Inc. | Method and apparatus for transmit pre-correction in wireless communications |
US6980800B2 (en) | 2002-02-12 | 2005-12-27 | Hughes Network Systems | System and method for providing contention channel organization for broadband satellite access in a communications network |
US7292854B2 (en) | 2002-02-15 | 2007-11-06 | Lucent Technologies Inc. | Express signaling in a wireless communication system |
US7076263B2 (en) | 2002-02-19 | 2006-07-11 | Qualcomm, Incorporated | Power control for partial channel-state information (CSI) multiple-input, multiple-output (MIMO) systems |
US20030162519A1 (en) | 2002-02-26 | 2003-08-28 | Martin Smith | Radio communications device |
US6862271B2 (en) | 2002-02-26 | 2005-03-01 | Qualcomm Incorporated | Multiple-input, multiple-output (MIMO) systems with multiple transmission modes |
US6959171B2 (en) | 2002-02-28 | 2005-10-25 | Intel Corporation | Data transmission rate control |
US6636568B2 (en) | 2002-03-01 | 2003-10-21 | Qualcomm | Data transmission with non-uniform distribution of data rates for a multiple-input multiple-output (MIMO) system |
US6687492B1 (en) | 2002-03-01 | 2004-02-03 | Cognio, Inc. | System and method for antenna diversity using joint maximal ratio combining |
US6873651B2 (en) | 2002-03-01 | 2005-03-29 | Cognio, Inc. | System and method for joint maximal ratio combining using time-domain signal processing |
JP3561510B2 (ja) | 2002-03-22 | 2004-09-02 | 松下電器産業株式会社 | 基地局装置及びパケット伝送方法 |
US7042858B1 (en) | 2002-03-22 | 2006-05-09 | Jianglei Ma | Soft handoff for OFDM |
US7012978B2 (en) | 2002-03-26 | 2006-03-14 | Intel Corporation | Robust multiple chain receiver |
US20040198276A1 (en) | 2002-03-26 | 2004-10-07 | Jose Tellado | Multiple channel wireless receiver |
US7197084B2 (en) | 2002-03-27 | 2007-03-27 | Qualcomm Incorporated | Precoding for a multipath channel in a MIMO system |
KR100456693B1 (ko) | 2002-03-28 | 2004-11-10 | 삼성전자주식회사 | 다중채널 통신 시스템의 비트 할당을 최적화하여 셋업시간을 최소화하는 방법 |
US7224704B2 (en) | 2002-04-01 | 2007-05-29 | Texas Instruments Incorporated | Wireless network scheduling data frames including physical layer configuration |
US7099377B2 (en) | 2002-04-03 | 2006-08-29 | Stmicroelectronics N.V. | Method and device for interference cancellation in a CDMA wireless communication system |
AU2003218506A1 (en) | 2002-04-05 | 2003-10-27 | Flarion Technologies, Inc. | Phase sequences for timing and access signals |
US7103325B1 (en) | 2002-04-05 | 2006-09-05 | Nortel Networks Limited | Adaptive modulation and coding |
US7623871B2 (en) | 2002-04-24 | 2009-11-24 | Qualcomm Incorporated | Position determination for a wireless terminal in a hybrid position determination system |
US7876726B2 (en) | 2002-04-29 | 2011-01-25 | Texas Instruments Incorporated | Adaptive allocation of communications link channels to I- or Q-subchannel |
US6690660B2 (en) | 2002-05-22 | 2004-02-10 | Interdigital Technology Corporation | Adaptive algorithm for a Cholesky approximation |
US7327800B2 (en) | 2002-05-24 | 2008-02-05 | Vecima Networks Inc. | System and method for data detection in wireless communication systems |
US6862440B2 (en) | 2002-05-29 | 2005-03-01 | Intel Corporation | Method and system for multiple channel wireless transmitter and receiver phase and amplitude calibration |
US7421039B2 (en) * | 2002-06-04 | 2008-09-02 | Lucent Technologies Inc. | Method and system employing antenna arrays |
KR100498326B1 (ko) | 2002-06-18 | 2005-07-01 | 엘지전자 주식회사 | 이동통신 단말기의 적응 변조 코딩 장치 및 방법 |
US7184713B2 (en) | 2002-06-20 | 2007-02-27 | Qualcomm, Incorporated | Rate control for multi-channel communication systems |
US7359313B2 (en) | 2002-06-24 | 2008-04-15 | Agere Systems Inc. | Space-time bit-interleaved coded modulation for wideband transmission |
US7095709B2 (en) | 2002-06-24 | 2006-08-22 | Qualcomm, Incorporated | Diversity transmission modes for MIMO OFDM communication systems |
US7613248B2 (en) | 2002-06-24 | 2009-11-03 | Qualcomm Incorporated | Signal processing with channel eigenmode decomposition and channel inversion for MIMO systems |
US7551546B2 (en) | 2002-06-27 | 2009-06-23 | Nortel Networks Limited | Dual-mode shared OFDM methods/transmitters, receivers and systems |
JP4579680B2 (ja) | 2002-06-27 | 2010-11-10 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 通信システムにおけるチャンネル特性の測定 |
US7342912B1 (en) | 2002-06-28 | 2008-03-11 | Arraycomm, Llc. | Selection of user-specific transmission parameters for optimization of transmit performance in wireless communications using a common pilot channel |
US7596134B2 (en) | 2002-07-03 | 2009-09-29 | Freescale Semiconductor, Inc. | Flexible method and apparatus for performing digital modulation and demodulation |
EP1379020A1 (en) | 2002-07-03 | 2004-01-07 | National University Of Singapore | A wireless communication apparatus and method |
US20040017785A1 (en) | 2002-07-16 | 2004-01-29 | Zelst Allert Van | System for transporting multiple radio frequency signals of a multiple input, multiple output wireless communication system to/from a central processing base station |
US6683916B1 (en) | 2002-07-17 | 2004-01-27 | Philippe Jean-Marc Sartori | Adaptive modulation/coding and power allocation system |
US6885708B2 (en) | 2002-07-18 | 2005-04-26 | Motorola, Inc. | Training prefix modulation method and receiver |
KR20040011653A (ko) | 2002-07-29 | 2004-02-11 | 삼성전자주식회사 | 채널 특성에 적응적인 직교 주파수 분할 다중 통신 방법및 장치 |
EP1540830B9 (en) | 2002-07-30 | 2009-09-16 | IPR Licensing Inc. | System and method for multiple-input multiple-output (mimo) radio communication |
US7653415B2 (en) | 2002-08-21 | 2010-01-26 | Broadcom Corporation | Method and system for increasing data rate in a mobile terminal using spatial multiplexing for DVB-H communication |
DE60325921D1 (de) | 2002-08-22 | 2009-03-12 | Imec Inter Uni Micro Electr | Verfahren zur MIMO-Übertragung für mehrere Benutzer und entsprechende Vorrichtungen |
US20040037257A1 (en) | 2002-08-23 | 2004-02-26 | Koninklijke Philips Electronics N.V. | Method and apparatus for assuring quality of service in wireless local area networks |
US6940917B2 (en) | 2002-08-27 | 2005-09-06 | Qualcomm, Incorporated | Beam-steering and beam-forming for wideband MIMO/MISO systems |
US8194770B2 (en) | 2002-08-27 | 2012-06-05 | Qualcomm Incorporated | Coded MIMO systems with selective channel inversion applied per eigenmode |
WO2004023674A1 (en) | 2002-09-06 | 2004-03-18 | Nokia Corporation | Antenna selection method |
US7260153B2 (en) | 2002-09-09 | 2007-08-21 | Mimopro Ltd. | Multi input multi output wireless communication method and apparatus providing extended range and extended rate across imperfectly estimated channels |
US20040052228A1 (en) | 2002-09-16 | 2004-03-18 | Jose Tellado | Method and system of frequency and time synchronization of a transceiver to signals received by the transceiver |
US7426176B2 (en) | 2002-09-30 | 2008-09-16 | Lucent Technologies Inc. | Method of power allocation and rate control in OFDMA systems |
US7961774B2 (en) | 2002-10-15 | 2011-06-14 | Texas Instruments Incorporated | Multipath interference-resistant receivers for closed-loop transmit diversity (CLTD) in code-division multiple access (CDMA) systems |
US6850511B2 (en) | 2002-10-15 | 2005-02-01 | Intech 21, Inc. | Timely organized ad hoc network and protocol for timely organized ad hoc network |
US7453844B1 (en) | 2002-10-22 | 2008-11-18 | Hong Kong Applied Science and Technology Research Institute, Co., Ltd. | Dynamic allocation of channels in a wireless network |
US7457625B2 (en) | 2002-10-22 | 2008-11-25 | Texas Instruments Incorporated | Wirelessly-linked, distributed resource control to support wireless communication in non-exclusive spectrum |
US8218609B2 (en) | 2002-10-25 | 2012-07-10 | Qualcomm Incorporated | Closed-loop rate control for a multi-channel communication system |
US8208364B2 (en) | 2002-10-25 | 2012-06-26 | Qualcomm Incorporated | MIMO system with multiple spatial multiplexing modes |
US8169944B2 (en) | 2002-10-25 | 2012-05-01 | Qualcomm Incorporated | Random access for wireless multiple-access communication systems |
US8170513B2 (en) | 2002-10-25 | 2012-05-01 | Qualcomm Incorporated | Data detection and demodulation for wireless communication systems |
US8570988B2 (en) * | 2002-10-25 | 2013-10-29 | Qualcomm Incorporated | Channel calibration for a time division duplexed communication system |
US7986742B2 (en) | 2002-10-25 | 2011-07-26 | Qualcomm Incorporated | Pilots for MIMO communication system |
US7002900B2 (en) | 2002-10-25 | 2006-02-21 | Qualcomm Incorporated | Transmit diversity processing for a multi-antenna communication system |
US7151809B2 (en) | 2002-10-25 | 2006-12-19 | Qualcomm, Incorporated | Channel estimation and spatial processing for TDD MIMO systems |
MXPA05004311A (es) | 2002-10-25 | 2005-08-03 | Qualcomm Inc | Deteccion y demodulacion de datos para sistemas de comunicaciones inalambricas. |
US20040081131A1 (en) | 2002-10-25 | 2004-04-29 | Walton Jay Rod | OFDM communication system with multiple OFDM symbol sizes |
US7324429B2 (en) | 2002-10-25 | 2008-01-29 | Qualcomm, Incorporated | Multi-mode terminal in a wireless MIMO system |
US8320301B2 (en) | 2002-10-25 | 2012-11-27 | Qualcomm Incorporated | MIMO WLAN system |
WO2004038972A1 (en) | 2002-10-26 | 2004-05-06 | Electronics And Telecommunications Research Institute | Frequency hopping ofdma method using symbols of comb pattern |
US7317750B2 (en) | 2002-10-31 | 2008-01-08 | Lot 41 Acquisition Foundation, Llc | Orthogonal superposition coding for direct-sequence communications |
EP1416688A1 (en) | 2002-10-31 | 2004-05-06 | Motorola Inc. | Iterative channel estimation in multicarrier receivers |
US7280625B2 (en) | 2002-12-11 | 2007-10-09 | Qualcomm Incorporated | Derivation of eigenvectors for spatial processing in MIMO communication systems |
US7280467B2 (en) | 2003-01-07 | 2007-10-09 | Qualcomm Incorporated | Pilot transmission schemes for wireless multi-carrier communication systems |
US7058367B1 (en) | 2003-01-31 | 2006-06-06 | At&T Corp. | Rate-adaptive methods for communicating over multiple input/multiple output wireless systems |
US7583637B2 (en) | 2003-01-31 | 2009-09-01 | Alcatel-Lucent Usa Inc. | Methods of controlling data rate in wireless communications systems |
US20040176097A1 (en) | 2003-02-06 | 2004-09-09 | Fiona Wilson | Allocation of sub channels of MIMO channels of a wireless network |
EP1447934A1 (en) | 2003-02-12 | 2004-08-18 | Institut Eurecom G.I.E. | Transmission and reception diversity process for wireless communications |
JP2004266586A (ja) | 2003-03-03 | 2004-09-24 | Hitachi Ltd | 移動通信システムのデータ送受信方法 |
JP4250002B2 (ja) | 2003-03-05 | 2009-04-08 | 富士通株式会社 | 適応型変調伝送システム及び適応型変調制御方法 |
US6927728B2 (en) | 2003-03-13 | 2005-08-09 | Motorola, Inc. | Method and apparatus for multi-antenna transmission |
US7822140B2 (en) | 2003-03-17 | 2010-10-26 | Broadcom Corporation | Multi-antenna communication systems utilizing RF-based and baseband signal weighting and combining |
US7885228B2 (en) | 2003-03-20 | 2011-02-08 | Qualcomm Incorporated | Transmission mode selection for data transmission in a multi-channel communication system |
JP4259897B2 (ja) | 2003-03-25 | 2009-04-30 | シャープ株式会社 | 無線データ伝送システム及び無線データ送受信装置 |
US7242727B2 (en) | 2003-03-31 | 2007-07-10 | Lucent Technologies Inc. | Method of determining transmit power for transmit eigenbeams in a multiple-input multiple-output communications system |
US7403503B2 (en) | 2003-07-09 | 2008-07-22 | Interdigital Technology Corporation | Resource allocation in wireless communication systems |
RU2006104121A (ru) | 2003-07-11 | 2006-07-10 | Квэлкомм Инкорпорейтед (US) | Динамический совместно используемый канал прямой линии связи для системы беспроводной связи |
WO2005014820A1 (fr) | 2003-08-08 | 2005-02-17 | Si Chuan Heben Biotic Engineering Co. Ltd. | 5-enolpyruvyl-3-phosphoshikimate synthase a bioresistance eleve au glyphosate et sequence de codage |
WO2005022833A2 (en) * | 2003-08-27 | 2005-03-10 | Wavion Ltd. | Wlan capacity enhancement using sdm |
US7065144B2 (en) | 2003-08-27 | 2006-06-20 | Qualcomm Incorporated | Frequency-independent spatial processing for wideband MISO and MIMO systems |
US7356089B2 (en) | 2003-09-05 | 2008-04-08 | Nortel Networks Limited | Phase offset spatial multiplexing |
KR100995031B1 (ko) | 2003-10-01 | 2010-11-19 | 엘지전자 주식회사 | 다중입력 다중출력 시스템에 적용되는 신호 전송 제어 방법 |
US8233462B2 (en) | 2003-10-15 | 2012-07-31 | Qualcomm Incorporated | High speed media access control and direct link protocol |
US8842657B2 (en) | 2003-10-15 | 2014-09-23 | Qualcomm Incorporated | High speed media access control with legacy system interoperability |
US8483105B2 (en) | 2003-10-15 | 2013-07-09 | Qualcomm Incorporated | High speed media access control |
KR100944821B1 (ko) | 2003-10-24 | 2010-03-03 | 콸콤 인코포레이티드 | 무선 멀티-캐리어 통신 시스템에서 다수의 데이터 스트림들의 주파수 분할 멀티플렉싱 |
US7508748B2 (en) | 2003-10-24 | 2009-03-24 | Qualcomm Incorporated | Rate selection for a multi-carrier MIMO system |
US7616698B2 (en) | 2003-11-04 | 2009-11-10 | Atheros Communications, Inc. | Multiple-input multiple output system and method |
US7298805B2 (en) | 2003-11-21 | 2007-11-20 | Qualcomm Incorporated | Multi-antenna transmission for spatial division multiple access |
US9473269B2 (en) | 2003-12-01 | 2016-10-18 | Qualcomm Incorporated | Method and apparatus for providing an efficient control channel structure in a wireless communication system |
US7231184B2 (en) * | 2003-12-05 | 2007-06-12 | Texas Instruments Incorporated | Low overhead transmit channel estimation |
EP1698086A2 (en) | 2003-12-27 | 2006-09-06 | Electronics and Telecommunications Research Institute | A mimo-ofdm system using eigenbeamforming method |
US7333556B2 (en) | 2004-01-12 | 2008-02-19 | Intel Corporation | System and method for selecting data rates to provide uniform bit loading of subcarriers of a multicarrier communication channel |
JP2005223829A (ja) | 2004-02-09 | 2005-08-18 | Nec Electronics Corp | 分数分周回路及びこれを用いたデータ伝送装置 |
US7206354B2 (en) | 2004-02-19 | 2007-04-17 | Qualcomm Incorporated | Calibration of downlink and uplink channel responses in a wireless MIMO communication system |
US7746886B2 (en) | 2004-02-19 | 2010-06-29 | Broadcom Corporation | Asymmetrical MIMO wireless communications |
US7274734B2 (en) | 2004-02-20 | 2007-09-25 | Aktino, Inc. | Iterative waterfiling with explicit bandwidth constraints |
US7486740B2 (en) | 2004-04-02 | 2009-02-03 | Qualcomm Incorporated | Calibration of transmit and receive chains in a MIMO communication system |
US7848442B2 (en) | 2004-04-02 | 2010-12-07 | Lg Electronics Inc. | Signal processing apparatus and method in multi-input/multi-output communications systems |
US7110463B2 (en) | 2004-06-30 | 2006-09-19 | Qualcomm, Incorporated | Efficient computation of spatial filter matrices for steering transmit diversity in a MIMO communication system |
US7606319B2 (en) | 2004-07-15 | 2009-10-20 | Nokia Corporation | Method and detector for a novel channel quality indicator for space-time encoded MIMO spread spectrum systems in frequency selective channels |
US20060018247A1 (en) | 2004-07-22 | 2006-01-26 | Bas Driesen | Method and apparatus for space interleaved communication in a multiple antenna communication system |
US7599443B2 (en) | 2004-09-13 | 2009-10-06 | Nokia Corporation | Method and apparatus to balance maximum information rate with quality of service in a MIMO system |
KR100905605B1 (ko) | 2004-09-24 | 2009-07-02 | 삼성전자주식회사 | 직교주파수분할다중화 다중입출력 통신 시스템의 전송 방법 |
TWI296753B (en) | 2004-10-26 | 2008-05-11 | Via Tech Inc | Usb control circuit for saving power and the method thereof |
EP1829262B1 (en) | 2004-11-16 | 2018-03-14 | QUALCOMM Incorporated | Closed-loop rate control for a mimo communication system |
US8498215B2 (en) | 2004-11-16 | 2013-07-30 | Qualcomm Incorporated | Open-loop rate control for a TDD communication system |
US7525988B2 (en) | 2005-01-17 | 2009-04-28 | Broadcom Corporation | Method and system for rate selection algorithm to maximize throughput in closed loop multiple input multiple output (MIMO) wireless local area network (WLAN) system |
US7466749B2 (en) | 2005-05-12 | 2008-12-16 | Qualcomm Incorporated | Rate selection with margin sharing |
US7603141B2 (en) | 2005-06-02 | 2009-10-13 | Qualcomm, Inc. | Multi-antenna station with distributed antennas |
US8358714B2 (en) | 2005-06-16 | 2013-01-22 | Qualcomm Incorporated | Coding and modulation for multiple data streams in a communication system |
US8619620B2 (en) | 2008-09-16 | 2013-12-31 | Qualcomm Incorporated | Methods and systems for transmission mode selection in a multi channel communication system |
US20100260060A1 (en) | 2009-04-08 | 2010-10-14 | Qualcomm Incorporated | Integrated calibration protocol for wireless lans |
-
2005
- 2005-01-27 US US11/045,781 patent/US8570988B2/en active Active
-
2006
- 2006-01-27 CN CN200680006710.9A patent/CN101133565B/zh active Active
- 2006-01-27 JP JP2007553320A patent/JP4773461B2/ja active Active
- 2006-01-27 TW TW095103565A patent/TWI371188B/zh active
- 2006-01-27 WO PCT/US2006/003203 patent/WO2006081550A2/en active Application Filing
- 2006-01-27 RU RU2007132195/09A patent/RU2407151C2/ru active
- 2006-01-27 SG SG200803348-2A patent/SG143245A1/en unknown
- 2006-01-27 CN CN201110026315XA patent/CN102158293B/zh active Active
- 2006-01-27 KR KR1020077019586A patent/KR100958957B1/ko active IP Right Grant
- 2006-01-27 CA CA2732214A patent/CA2732214A1/en not_active Abandoned
- 2006-01-27 SG SG201002943-7A patent/SG161317A1/en unknown
- 2006-01-27 CA CA2596092A patent/CA2596092C/en not_active Expired - Fee Related
- 2006-01-27 BR BRPI0607131-7A patent/BRPI0607131A2/pt not_active IP Right Cessation
- 2006-01-27 EP EP06719865A patent/EP1847036A2/en not_active Withdrawn
- 2006-01-27 KR KR1020107002240A patent/KR20100025593A/ko not_active Application Discontinuation
-
2011
- 2011-04-25 JP JP2011097222A patent/JP2011234361A/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20010048675A1 (en) * | 2000-03-29 | 2001-12-06 | Mohammed Nafie | Wireless communication |
US20030002450A1 (en) | 2001-06-22 | 2003-01-02 | Ahmad Jalali | Method and apparatus for transmitting data in a time division duplexed (TDD) communication system |
WO2004039022A2 (en) * | 2002-10-25 | 2004-05-06 | Qualcomm, Incorporated | Correction for differences between downlink and uplink channel responses |
Also Published As
Publication number | Publication date |
---|---|
CN102158293B (zh) | 2013-08-14 |
WO2006081550A3 (en) | 2007-01-11 |
CN101133565A (zh) | 2008-02-27 |
US20050128953A1 (en) | 2005-06-16 |
SG143245A1 (en) | 2008-06-27 |
EP1847036A2 (en) | 2007-10-24 |
RU2407151C2 (ru) | 2010-12-20 |
CN101133565B (zh) | 2014-12-24 |
WO2006081550A2 (en) | 2006-08-03 |
CA2596092C (en) | 2013-07-30 |
BRPI0607131A2 (pt) | 2009-08-04 |
CA2732214A1 (en) | 2006-08-03 |
CN102158293A (zh) | 2011-08-17 |
CA2596092A1 (en) | 2006-08-03 |
RU2007132195A (ru) | 2009-03-10 |
JP2011234361A (ja) | 2011-11-17 |
KR20070107073A (ko) | 2007-11-06 |
US8570988B2 (en) | 2013-10-29 |
TW200637230A (en) | 2006-10-16 |
JP2008530834A (ja) | 2008-08-07 |
TWI371188B (en) | 2012-08-21 |
JP4773461B2 (ja) | 2011-09-14 |
KR20100025593A (ko) | 2010-03-09 |
SG161317A1 (en) | 2010-05-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100958957B1 (ko) | 시분할 듀플렉스 통신 시스템에 대한 채널 교정 | |
KR101014502B1 (ko) | 시분할 이중 방식 통신 시스템에서의 채널 정정 | |
KR100887199B1 (ko) | Mimo 통신 시스템에서 송신 다이버시티를 스티어링하기위한 공간 필터 매트릭스의 효율적인 계산 | |
JP5296232B2 (ja) | 無線mimoシステムにおけるマルチモード端末 | |
JP5269320B2 (ja) | 無線mimo通信システムにおけるダウンリンクチャネル応答及びアップリンクチャネル応答の校正 | |
JP5175315B2 (ja) | Mimo通信システムにおける空間処理のための固有ベクトルの導出 | |
JP2010193477A6 (ja) | 時分割複信通信システムのためのチャネル校正 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
AMND | Amendment | ||
E601 | Decision to refuse application | ||
J201 | Request for trial against refusal decision | ||
A107 | Divisional application of patent | ||
AMND | Amendment | ||
B701 | Decision to grant | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20130429 Year of fee payment: 4 |
|
FPAY | Annual fee payment |
Payment date: 20140430 Year of fee payment: 5 |
|
FPAY | Annual fee payment |
Payment date: 20160330 Year of fee payment: 7 |
|
FPAY | Annual fee payment |
Payment date: 20170330 Year of fee payment: 8 |
|
FPAY | Annual fee payment |
Payment date: 20180329 Year of fee payment: 9 |
|
FPAY | Annual fee payment |
Payment date: 20190327 Year of fee payment: 10 |