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TW200705845A - Orthogonal frequency division multiplexing code division multiple access system - Google Patents

Orthogonal frequency division multiplexing code division multiple access system

Info

Publication number
TW200705845A
TW200705845A TW095109945A TW95109945A TW200705845A TW 200705845 A TW200705845 A TW 200705845A TW 095109945 A TW095109945 A TW 095109945A TW 95109945 A TW95109945 A TW 95109945A TW 200705845 A TW200705845 A TW 200705845A
Authority
TW
Taiwan
Prior art keywords
received data
serial
orthogonal frequency
multiple access
data
Prior art date
Application number
TW095109945A
Other languages
Chinese (zh)
Other versions
TWI337013B (en
Inventor
Ying-Ming Tsai
Guo-Dong Zhang
Jung-Lin Pan
Original Assignee
Interdigital Tech Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Interdigital Tech Corp filed Critical Interdigital Tech Corp
Publication of TW200705845A publication Critical patent/TW200705845A/en
Application granted granted Critical
Publication of TWI337013B publication Critical patent/TWI337013B/en

Links

Landscapes

  • Mobile Radio Communication Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

An orthogonal frequency division multiplexing (OFDM)-code division multiple access (CDMA) system is disclosed. The system includes a transmitter and a receiver. At the transmitter, a spreading and subcarrier mapping unit spreads an input data symbol with a complex quadratic sequence code to generate a plurality of chips and maps each chip to one of a plurality of subcarriers. An inverse discrete Fourier transform is performed on the chips mapped to the subcarriers and a cyclic prefix (CP) is inserted to an OFDM frame. A parallel-to-serial converter converts the time-domain data into a serial data stream for transmission. At the receiver, a serial-to-parallel converter converts received data into multiple received data streams and the CP is removed from the received data. A discrete Fourier transform is performed on the received data streams and equalization is performed. A despreader despreads an output of the equalizer to recover the transmitted data.
TW95109945A 2005-03-24 2006-03-22 Orthogonal frequency division multiplexing code division multiple access system TWI337013B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US66486805P 2005-03-24 2005-03-24
US66544205P 2005-03-25 2005-03-25
US66581105P 2005-03-28 2005-03-28
US66614005P 2005-03-29 2005-03-29

Publications (2)

Publication Number Publication Date
TW200705845A true TW200705845A (en) 2007-02-01
TWI337013B TWI337013B (en) 2011-02-01

Family

ID=45075101

Family Applications (6)

Application Number Title Priority Date Filing Date
TW100101163A TWI433477B (en) 2005-03-24 2006-03-22 Transmitting device, receiving device, and method applicable in an orthogonal frequency division multiplexing-code division multiple access system
TW103102455A TWI514788B (en) 2005-03-24 2006-03-22 Transmitting device, receiving device, and method applicable in an orthogonal frequency division multiplexing-code division multiple access system
TW104132415A TWI587649B (en) 2005-03-24 2006-03-22 Transmitting device, receiving device, and method applicable in an orthogonal frequency division multiplexing-code division multiple access system
TW95109945A TWI337013B (en) 2005-03-24 2006-03-22 Orthogonal frequency division multiplexing code division multiple access system
TW106109981A TWI666886B (en) 2005-03-24 2006-03-22 Transmitting device, receiving device, and method applicable in an orthogonal frequency division multiplexing-code division multiple access system
TW095137444A TW200731688A (en) 2005-03-24 2006-03-22 Orthogonal frequnecy division multiplexing code division multiple access system

Family Applications Before (3)

Application Number Title Priority Date Filing Date
TW100101163A TWI433477B (en) 2005-03-24 2006-03-22 Transmitting device, receiving device, and method applicable in an orthogonal frequency division multiplexing-code division multiple access system
TW103102455A TWI514788B (en) 2005-03-24 2006-03-22 Transmitting device, receiving device, and method applicable in an orthogonal frequency division multiplexing-code division multiple access system
TW104132415A TWI587649B (en) 2005-03-24 2006-03-22 Transmitting device, receiving device, and method applicable in an orthogonal frequency division multiplexing-code division multiple access system

Family Applications After (2)

Application Number Title Priority Date Filing Date
TW106109981A TWI666886B (en) 2005-03-24 2006-03-22 Transmitting device, receiving device, and method applicable in an orthogonal frequency division multiplexing-code division multiple access system
TW095137444A TW200731688A (en) 2005-03-24 2006-03-22 Orthogonal frequnecy division multiplexing code division multiple access system

Country Status (1)

Country Link
TW (6) TWI433477B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI423608B (en) * 2010-01-08 2014-01-11 Fujitsu Ltd Methods and apparatus for generating and mapping of orthogonal cover code

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9203673B2 (en) * 2012-05-13 2015-12-01 Broadcom Corporation Multi-channel support within single user, multiple user, multiple access, and/or MIMO wireless communications

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6804307B1 (en) * 2000-01-27 2004-10-12 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for efficient transmit diversity using complex space-time block codes
US6744807B1 (en) * 2000-05-31 2004-06-01 University Of Pretoria Multi-dimensional spread spectrum modem
CN1126307C (en) * 2000-09-22 2003-10-29 信息产业部电信传输研究所 Multiphase orthogonal spectrum spreading code design and its spread-eliminating method
US7218666B2 (en) * 2000-12-29 2007-05-15 Motorola, Inc. Method and system for transmission and frequency domain equalization for wideband CDMA system
JP3548148B2 (en) * 2001-09-27 2004-07-28 松下電器産業株式会社 OFDM transmission apparatus and OFDM transmission method
KR100864709B1 (en) * 2002-05-30 2008-10-23 삼성전자주식회사 OPM transmitter and signal processing method which can improve reception performance
KR100586391B1 (en) * 2003-04-25 2006-06-08 주식회사 팬택 Transmitter Using Interleaving Delay Diversity Technique
US7394865B2 (en) * 2003-06-25 2008-07-01 Nokia Corporation Signal constellations for multi-carrier systems
US7876806B2 (en) * 2005-03-24 2011-01-25 Interdigital Technology Corporation Orthogonal frequency division multiplexing-code division multiple access system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI423608B (en) * 2010-01-08 2014-01-11 Fujitsu Ltd Methods and apparatus for generating and mapping of orthogonal cover code

Also Published As

Publication number Publication date
TWI666886B (en) 2019-07-21
TWI337013B (en) 2011-02-01
TWI514788B (en) 2015-12-21
TW200731688A (en) 2007-08-16
TW201620260A (en) 2016-06-01
TW201145851A (en) 2011-12-16
TW201739181A (en) 2017-11-01
TWI587649B (en) 2017-06-11
TW201427300A (en) 2014-07-01
TWI433477B (en) 2014-04-01

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