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[1] Wu Gang**, Xu Changlong, Wang Haifeng, Cheng Shixin, et al. Performance Evaluation of Space-Time Spreading andOrthogonal Transmit Diversity* [J]. Journal of Southeast University (English Edition), 2002, 18 (1): 6-12. [doi:10.3969/j.issn.1003-7985.2002.01.002]
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Performance Evaluation of Space-Time Spreading andOrthogonal Transmit Diversity*()
空时扩频与正交发射分集的性能评估
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
18
Issue:
2002 1
Page:
6-12
Research Field:
Information and Communication Engineering
Publishing date:
2002-03-30

Info

Title:
Performance Evaluation of Space-Time Spreading andOrthogonal Transmit Diversity*
空时扩频与正交发射分集的性能评估
Author(s):
Wu Gang1**;  Xu Changlong1;  Wang Haifeng2;  Cheng Shixin1
1National Mobile Communication Research Laboratory, Southeast University, Nanjing 210096, China
2Nokia Mobile Phones, Oulu, Finland PL 50, 90571
邬钢1;  许昌龙1;  王海峰2;  程时昕1
1东南大学移动通信国家重点实验室, 南京210096; 2诺基亚移动电话公司, 奥陆, 芬兰
Keywords:
space-time spreading;  orthogonal transmit diversity;  cdma2000
空时扩频;  正交发射分集;  cdma2000
PACS:
TN929.533
DOI:
10.3969/j.issn.1003-7985.2002.01.002
Abstract:
Space-time spreading(STS)and orthogonal transmit diversity(OTD)are two transmit diversity schemes proposed by cdma2000 standard. In this paper, performance comparison analysis of the two transmits diversity schemes in multipath channel under multiuser situation are carried out. Link level simulation in forward link cdma2000 is performed in IMT-2000 channel. Performance analysis and simulation results show that the performance improvement provided by STS over OTD decreases as the increase of propagation path number and decrease of the user number.
空时扩频(STS)及正交发射分集(OTD)是cdma2000标准提出的2种发射分集方案.本文在多径信道及多用户条件下对2种方案进行了性能比较分析.在IMT-2000标准信道下进行了链路级仿真.性能分析及仿真结果表明STS相对于OTD的性能增益随着传播路径的增加及用户数的降低而减少.

References:

[1] 3GPP2. Physical layer standard for cdma2000 spread spectrum systems, April 2000.
[2] Papadias C, Hochwald B, Marzetta T, Buehrer M, Soni R. Space-time spreading for CDMA systems[A]. In:Proceeding of 6th Workshop Smart Antennas Wireless Mobile Communications[C]. Stanford, CA, July 22-23, 1999.
[3] Weerackody V. Diversity for direct-sequence spread spectrum system using multiple transmit antennas[A]. In:Proceeding of IEEE International Conference on Communication[C].1993.1775-1779.
[4] Soni R, Buehrer M, Tsai J. Open-loop transmit diversity In IS-2000 systems[A]. In:33rd Asilomar Conference Signals, Systems, Computer[C]. Pacific Grove, CA, Oct.24-27, 1999.654-658.
[5] Universal mobile telecommunications system(UMTS); Selection procedures for the choice of radio transmission technologies of UMTS(UMTS 30.03, V3.2.0), ETSI, April 1998.
[6] Hochwald B, Marzetta T L, Papadias C B. A tranmitter diversity scheme for wideband CDMA systems based on space-time spreading[J]. IEEE IEEE J Select Areas Commun, 2001, 19:48-60.
[7] Divsalar D, Simon M K. The design of trellis coded MPSK for fading channel: Performance criteria[J]. IEEE Trans Commun, 1988, 36:1004-1012.
[8] Pursley M B. Performance evaluation for phase coded spread specrum multiple access communication — Part I[J]. IEEE Trans Commun, 1977, COM-25:795-799.

Memo

Memo:
* The project supported by Nokia.
** Born in 1970, male, graduate.
Last Update: 2002-03-20