通信学报 ›› 2005, Vol. 26 ›› Issue (10): 29-33.doi: 1000-436X(2005)10-0029-05

• 学术论文 • 上一篇    下一篇

Optimal transmissions for space-time coded OFDM UWB systems

  

  1. 1 Dept.of Electronics ＆ Information Engineering,Huazhong University of Science and Technology,Wuhan 430074,China
    2 National Laboratory for Optoelectronics,Wuhan 430074,China
  • 出版日期:2005-10-25 发布日期:2017-06-24
  • 基金资助:
    This work was partially supported by NSF under Grant 60496315 and national “863” projects under Grant

Optimal transmissions for space-time coded OFDM UWB systems

Jun-fang WANG1,2,Guang-xi ZHU1,2,Jiang JIN1,2   

  1. 1 Dept.of Electronics ＆ Information Engineering,Huazhong University of Science and Technology,Wuhan 430074,China
    2 National Laboratory for Optoelectronics,Wuhan 430074,China
  • Online:2005-10-25 Published:2017-06-24

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摘要：

关键词: ultra-wideband(UWB), orthogonal frequency-division multiplexing (OFDM), space-time coded (STC), power load, medium access control (MAC)

Abstract:

The emerging ultra-wideband (UWB)system offers a great potential for the design of high-speed short-range communications.Compared with great progress at physical layer,the corresponding medium access control (MAC)layer designs are naturally placed on the schedules.We focus on the optimal power load scheme,which is an integral part of the MAC layer protocol design,for UWB space-time coded (STC)orthogonal frequency-division multiplexing (OFDM)transmissions.Assumed the transmitter has perfect or partial channel stage information (CSI).Based on the optimization criteria of maximizing capacity,three kinds of power load schemes were presented with different tradeoff among performance,complexity and feedback bandwidth overhead.The proposed schemes are verified and compared under the channel prototype proposed by IEEE 802.15.3a Task Group.

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