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瑞利快衰落信道下STBC的译码器设计 被引量:1

Decoder Design for STBC over Rayleigh Fast Fading Channels
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摘要 Alamouti提出的空时分组码(STBC)发射分集技术,其优良性能及低复杂性的译码方案是限制在准静态衰落信道的情况下的,通过研究发现此系统在时变快衰落信道时性能会有严重的损失。为了改善系统在快衰落信道下的性能,提出一种最小均方误差(MMSE)线性译码器,该译码器能够同时抑制噪声和干扰。理论及计算机仿真证明,MMSE译码器用于空时分组码发射分集系统中可以有效地改善无线信道的时变快衰落对系统性能的影响。
出处 《无线电工程》 2005年第2期58-61,共4页 Radio Engineering
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参考文献4

  • 1S. M. Alamouti. A Simple Transmit Diversity Technique for Wireless Communications. IEEE J. Select. Area Commun.,1998,16(10) : 1451 - 1458.
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同被引文献6

  • 1G D Papadopoulos, G K Karagiannidis, F N Pavlidou. Performance bounds of space-time block coding in Rician and log-normal fading channels[ J ]. Communications, IET, 2007,1 ( 1 ) : 86-91.
  • 2C Yuen, Y L Guan, T T Tjhung. Optimising quasi-orthogonal STBC through group-constrained linear transformation [ J]. Communications, IET, 2007,1 ( 3 ) : 373-381.
  • 3G Bauch. Space- Time Block Codes Versus Space- Frequency Block Codes[ C]. IEEE Vehicular Technology Conference, 2003, Orlando.
  • 4Y H Yeh, et al. DCT-based channel estimation for OFDM systems [ C]. IEEE International Conference on Communications, France, 2004. 2442-2446.
  • 5Y H Yeh, S G Chen. Efficient channel estimation based on discrete cosine transform [ J ]. IEEE ICASSP, 2003,4 ( 1 ) : 676 - 679.
  • 6M R Raghavendra, K Giridhar. Improving Channel Estimation in OFDM Systems for Sparse Muhipath Channels[ J]. SIGNAL PROCESSING LETFERS, IEEE, 2005,12 ( 1 ) : 52-55.

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