[go: up one dir, main page]

Bahrenburg et al., 1998 - Google Patents

Outdoor Measurements with a TD (time division)-CDMA Hardware Demonstrator for UMTS

Bahrenburg et al., 1998

Document ID
9572943975589081091
Author
Bahrenburg S
Euscher C
Mayer J
Schlee J
Weber T
Publication year
Publication venue
1998 IEEE 5th International Symposium on Spread Spectrum Techniques and Applications-Proceedings. Spread Technology to Africa (Cat. No. 98TH8333)

External Links

Snippet

In the UMTS air interface standardisation within ETSI, TD (time division)-CDMA has been chosen for the unpaired band operation. TD-CDMA makes use of all three basic multiple access schemes FDMA, TDMA and CDMA. It combines the advantages of these three …
Continue reading at ieeexplore.ieee.org (other versions)

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0602—Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching
    • H04B7/0604—Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching with predefined switching scheme
    • H04B7/0606—Random or pseudo-random switching scheme
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/391—Modelling the propagation channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/005—Control of transmission; Equalising
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATIONS NETWORKS
    • H04W52/00—Power Management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC [Transmission power control]
    • H04W52/18—TPC being performed according to specific parameters
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70703—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation using multiple or variable rates
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATIONS NETWORKS
    • H04W56/00—Synchronization arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATIONS NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures

Similar Documents

Publication Publication Date Title
KR100547748B1 (en) System and Method for Improving the Performance of Adaptive Antenna Array in Moving Objects
CA2298709C (en) Method and radio station for transmitting data
RU2260913C2 (en) Power control in radio communication system
US7602841B2 (en) Pilot signals for synchronization and/or channel estimation
US6959010B1 (en) Method and radio station for data transmission
EP0772918A1 (en) Method for transmitting a pilot signal, and a cellular radio system
CN1154250C (en) Method of processing CDMA signal components
US5574989A (en) Time division multiple access cellular communication system and method employing base station diversity transmission
Olofsson et al. Transmitter diversity with antenna hopping for wireless communication systems
Arredondo et al. Advanced mobile phone service: Voice and data transmission
US6799055B2 (en) Method of receiving spread spectrum signal, and receiver
EP0722636B1 (en) Method of increasing signal quality by adjusting the spreading ratio in a cdma cellular radio system
Bahrenburg et al. Outdoor Measurements with a TD (time division)-CDMA Hardware Demonstrator for UMTS
Monk et al. Open-loop power control error on a frequency selective CDMA channel
DaSilva et al. Performance of the forward link of a CDMA cellular network
US20050018758A1 (en) Receiving spread spectrum signal in radio system
Mohr et al. Downlink performance of IS-95 DS-CDMA under multipath propagation conditions
GB2336506A (en) Method of Reducing Co-channel Interference
EP1102422A1 (en) Method and system for improving transmission efficiency in TDMA multi-carrier communication systems
Toskala et al. Cellular OFDM/CDMA downlink performance in the link and system levels
Tseng et al. The influence of propagation environment in a live GSM network
KR100331871B1 (en) method of confirming a frame synchronization, which is used slot by slot correlation results
Zhang et al. Simulation of a UHF-band indoor wireless TCDMA system based on multipath fading radio channel modeling
Matsutani et al. A forward link intracell orthogonalization technique using multicarrier pre-decorrelation for CDMA wireless local communication system
Eizenhofer et al. The hybrid transmission scheme of a 900 MHz digital land mobile radio system