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Volume 26 Issue 3
Mar.  2004
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Li Hai-tao, Zhang Jing, Lu Jian-hua. Study on the MIMO OFDM Systems with Adaptive Bit and Power Allocation[J]. Journal of Electronics & Information Technology, 2004, 26(3): 416-420.
Citation: Li Hai-tao, Zhang Jing, Lu Jian-hua. Study on the MIMO OFDM Systems with Adaptive Bit and Power Allocation[J]. Journal of Electronics & Information Technology, 2004, 26(3): 416-420.

Study on the MIMO OFDM Systems with Adaptive Bit and Power Allocation

  • Received Date: 2002-10-22
  • Rev Recd Date: 2003-04-24
  • Publish Date: 2004-03-19
  • The multiple antenna Orthogonal Frequency Division Multiplexing(OFDM) system model is analyzed in this paper. Considering that Multiple-Input Multiple-Output(MIMO) channel can be separated into parallel subchannels by means of the singular value decomposition, and deep faded subcarriers may degrade the OFDM system perfor mance, the adaptive bit and power allocation for MIMO OFDM system are proposed. The analysis and simulation results show that the proposed adaptive MIMO OFDM improves bit error rate performance and spectral efficiency of the system.
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  • Raleigh G G, Cioffi J M. Space-temporal coding for wireless communications. In Proc. of Globecom, London, 1996: 1809-1814.[2]Ye Li, Chuang J C, Sollenberger N R. Transmitter diversity for OFDM systems and its impact on high rate data wireless networks. IEEE Trans. J. on SAC, 1999, 17(7): 1233-1243.[3]Chow P, et al.. A practical discrete multitone transceiver loading algorithm for data transmission over spectrally shaped channels. IEEE Trans. Comm., 1995, COM-43(2): 773-775.[4]Campello J. Optimal discrete bit loading for multicarrier modulation systems. In Proc. of ISIT,Cambrige, USA, 1998: 193.[5]Campello J. Discrete bit loading for multicarrier modulation systems. [Ph.D Thesis], Stanford University, 1999.[6]Wong K, Lai S, Cheng R S, Letaief K B, Murch R D. Adaptive spatial-subcarrier trellis coded MQAM and power optimization for OFDM transmission. In Proc. of VTC, Boston, USA, 2000:2049-2053.[7]Chung S T, Goldsmith A J. Degrees of freedom in adaptive modulation: a unified view. IEEE Trans. on Comm., 2001, COM-49(9): 1561-1571.
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