Flexible paired-orthogonal codes for multi-user MIMO-OFDM

doi:10.1016/S1005-8885(10)60025-8

Acta Metallurgica Sinica(English letters) ›› 2011, Vol. 18 ›› Issue (1): 36-41.doi: 10.1016/S1005-8885(10)60025-8

Flexible paired-orthogonal codes for multi-user MIMO-OFDM

王亚琛¹,樊燕红²,马晓凤¹,李晔²

1. 山东省计算中心
2. 山东省科学院

收稿日期:2010-05-07 修回日期:2010-11-04 出版日期:2011-02-28 发布日期:2011-02-28
通讯作者: 王亚琛 E-mail:wangych@keylab.net

Flexible paired-orthogonal codes for multi-user MIMO-OFDM

Received:2010-05-07 Revised:2010-11-04 Online:2011-02-28 Published:2011-02-28
Contact: Yachen WANG E-mail:wangych@keylab.net

摘要/Abstract

摘要：

The work proposes two novel spreading codes, called extensive double-orthogonal code (EDOC) and flexible paired-orthogonal code (FPOC), for multi-user downlink multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems. The goal of code designs is to obtain an improved bit error rate (BER) performance without loss of bandwidth efficiency. The code designs achieve space diversity by employing multiple antennas at both transmit ends and receive ends. Codes are reasonably spread into time, frequency and space domain. The proposed codes are attractively characterized with length flexibility, which breaks the “power of two” constraint. The simulation results indicate that the proposed codes improve overall BER performance, by exploiting space diversity gains. The flexibility in code length also results in high spectral efficiency.

关键词:

flexible paired-orthogonality, MIMO, OFDM, multi-user, space diversity

Abstract:

Key words:

flexible paired-orthogonality, MIMO, OFDM, multi-user, space diversity

参考文献

1. Weinsten S B, Ebert P M. Data transmission by frequency-division multiplexing using the discrete Fourier transform. IEEE Transactions on Communications, 1971, 19(5): 628-634

2. Alamouti S M. A simple transmit diversity technique for wireless communication. IEEE Journal on Selected Areas in Communications, 1998, 16(8): 1451-1458

3. Bolsckei H. Space-frequency codes for broadband fading channels. Proceedings of the IEEE International Symposium on Information Theory (ISIT’01), Jun 24-29, 2001. Washington, DC, USA. Piscataway, NJ, USA: IEEE, 2001: 219

4. Gong Y, Lataief K B. Space-frequency-time coded OFDM for broadband wireless communications. Proceedings of the Global Telecommunications Conference (GLOBECOM’01), Vol 1, Nov 25-29, 2001, San Antonio, TX, USA. Piscataway, NJ, USA: IEEE, 2001: 519-523

5. Juntti M, Vehkapera M, Leinonen J, et al. MIMO MC-CDMA communications for future cellular systems. IEEE Communications Magazine, 2005, 43(2): 118-124

6. Aljerjawi M, Hamouda W. Performance analysis of space-time diversity in multiuser CDMA systems over fading channels. Proceedings of the IEEE International Conference on Communications (ICC’06): Vol 12, Jun 11-15, 2006, Istanbul, Turkey. Piscataway, NJ, USA: IEEE, 2006: 5622-5627

7. Yang L. MIMO-assisted space-code-division multiple-access linear detectors and performance over multipath fading channels. IEEE Journal on Selected Areas in Communications, 2006, 24(1): 121-131

8. Luo Z D, Liu J S, Zhao M, et al. Double-orthogonal coded space-time-frequency spreading CDMA scheme. IEEE Journal on Selected Areas in Communications, 2006, 24(6): 1244-1255

9. Tarokh V, Jafarkhani H, Calerbank A R. Space-time block codes from orthogonal designs. IEEE Transactions on Information Theory, 2006, 45(5): 1456-1467

10. Li Y, Kyung J, Son J, et al. PAPR reduction in MC/DS CDMA system by DFT spreading codes. Proceedings of the 3rd International Conference on Information Technology and Applications (ICITA’05): Vol 2, Jul 4-7, 2005, Sydney, Australia. Piscataway, NJ, USA: IEEE, 2005: 326-329

11. Texas Instruments. Link level evaluation of 4-TX pre-coding for SU-MIMO. 3GPP. R1-072595. 2007

12. Wang Y C, Zhang P, Shen J Y, et al. Flexible orthogonal code for CDMA based MIMO-OFDM systems with space-time-frequency spreading. Proceedings of the IEEE International Conference on Communications (ICC’08), May 19-23, 2008, Beijing, China. Piscataway, NJ, USA: IEEE, 2008: 5140-5144

13. Su W, Safar Z, Liu K J R. Towards maximum achievable diversity in space, time, and frequency: performance analysis and code design. IEEE Transactions on Wireless Communications, 2005, 4(4): 1847-1857

14. Stuber G. Principles of mobile communication. Norwell, MA,USA: Kluwer, 2001

Flexible paired-orthogonal codes for multi-user MIMO-OFDM

Flexible paired-orthogonal codes for multi-user MIMO-OFDM

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