TW200731688A - Orthogonal frequnecy division multiplexing code division multiple access system - Google Patents
Orthogonal frequnecy division multiplexing code division multiple access systemInfo
- Publication number
- TW200731688A TW200731688A TW095137444A TW95137444A TW200731688A TW 200731688 A TW200731688 A TW 200731688A TW 095137444 A TW095137444 A TW 095137444A TW 95137444 A TW95137444 A TW 95137444A TW 200731688 A TW200731688 A TW 200731688A
- Authority
- TW
- Taiwan
- Prior art keywords
- received data
- serial
- multiple access
- data
- orthogonal
- Prior art date
Links
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- 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.
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 (1)
Publication Number | Publication Date |
---|---|
TW200731688A true TW200731688A (en) | 2007-08-16 |
Family
ID=45075101
Family Applications (6)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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 |
TW095137444A TW200731688A (en) | 2005-03-24 | 2006-03-22 | Orthogonal frequnecy 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 |
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 |
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 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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 |
Family Applications After (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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 |
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 |
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 |
Country Status (1)
Country | Link |
---|---|
TW (6) | TWI514788B (en) |
Cited By (1)
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)
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)
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 | OFDM Transmitter capable of improving the quality of receiving and a method processing OFDM signal thereof |
KR100586391B1 (en) * | 2003-04-25 | 2006-06-08 | 주식회사 팬택 | Transmitter using interleaving delay diversity |
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 |
-
2006
- 2006-03-22 TW TW103102455A patent/TWI514788B/en active
- 2006-03-22 TW TW095137444A patent/TW200731688A/en unknown
- 2006-03-22 TW TW95109945A patent/TWI337013B/en active
- 2006-03-22 TW TW106109981A patent/TWI666886B/en active
- 2006-03-22 TW TW104132415A patent/TWI587649B/en active
- 2006-03-22 TW TW100101163A patent/TWI433477B/en active
Cited By (1)
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 |
---|---|
TWI514788B (en) | 2015-12-21 |
TWI587649B (en) | 2017-06-11 |
TW201620260A (en) | 2016-06-01 |
TW201427300A (en) | 2014-07-01 |
TW201145851A (en) | 2011-12-16 |
TWI433477B (en) | 2014-04-01 |
TWI666886B (en) | 2019-07-21 |
TW200705845A (en) | 2007-02-01 |
TW201739181A (en) | 2017-11-01 |
TWI337013B (en) | 2011-02-01 |
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