[go: up one dir, main page]

Bogucka, 1999 - Google Patents

Effective implementation of the OFDM/CDMA base station transmitter using joint FHT and IFFT

Bogucka, 1999

Document ID
2666921977021593866
Author
Bogucka H
Publication year
Publication venue
1999 2nd IEEE Workshop on Signal Processing Advances in Wireless Communications (Cat. No. 99EX304)

External Links

Snippet

In the paper, a multicarrier CDMA (OFDM/CDMA) technique for application in mobile radio communication systems is considered. In the base station (BS) transmitter, the orthogonal modulation of Walsh sequences can effectively be realized by fast Hadamard transform …
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
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H04B1/7107—Subtractive interference cancellation
    • 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
    • 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
    • H04B1/709—Correlator structure
    • H04B1/7093—Matched filter type
    • 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
    • H04L27/2614—Peak power aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0016—Time-frequency-code
    • H04L5/0021—Time-frequency-code in which codes are applied as a frequency-domain sequences, e.g. MC-CDMA
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/023—Multiplexing of multicarrier modulation 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 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

Similar Documents

Publication Publication Date Title
JP5204312B2 (en) Transmitter, receiver, method and program
KR100755937B1 (en) Apparatus and method for improved performance in MC-CDMA radio telecommunication systems that use pulse-shaping filters
Choi et al. Crest-factor study of MC-CDMA and OFDM
WO2006102403A2 (en) Orthogonal frequency division multiplexing code division multiple access system
EP1317086A1 (en) Data transmission apparatus and data transmission method
Tsai et al. MAI-free MC-CDMA systems based on Hadamard–Walsh codes
US20050276311A1 (en) Mt-cdma using spreading codes with interference-free windows
JP3871270B2 (en) Transmitting apparatus and communication system
Lee et al. Comparison of multicarrier DS-CDMA broadcast systems in a multipath fading channel
Bogucka Effective implementation of the OFDM/CDMA base station transmitter using joint FHT and IFFT
US20060280229A1 (en) Space code block coding and spreading apparatus and method for transmission diversity and CDMA diversity transmitter and CDMA mobile station receiver using the same
EP0996234B1 (en) Receiver architecture for a multi scrambling code transmission CDMA technique
KR20040036821A (en) System for spreading/inverse spreading of Multicarrier-Code Division Multiple Access and method thereof
Bogucka Application of the new joint complex Hadamard-inverse Fourier transform in a OFDM/CDMA wireless communication system
TWI587649B (en) Transmitting device, receiving device, and method applicable in an orthogonal frequency division multiplexing-code division multiple access system
Matsushima et al. Complex orthogonal variable spreading factor codes based on polyphase sequences
CN1184785C (en) Method of Transmit Diversity in Orthogonal Multi-Carrier System
Samad et al. Receiver design for quasi-asynchronous MC-CDMA by using QCSS code
Cacopardi et al. Combined OFDM-CDMA configuration for multimedia wireless applications
Buzid et al. Multi-carrier OFDM, Single Carrier with Frequency Domain Equalization (SCFDE) and CDMA: Performance Comparison
CN108964828B (en) Signal transmitting method and signal receiving method
Ryu et al. Performance of multicarrier CS/CDMA in frequency-selective Rayleigh fading channels
Bogucka New effective joint detection technique for multicarrier CDMA wireless systems applying the Walsh codes
Nallanathan et al. Generalized lapped transform (GLT) based high-speed transmission for wireless mobile communications
KR101038079B1 (en) Method and apparatus for data transmission using M-1-1 cooperative communication and OSC-S in wireless sensor network