A Robust Adaptive MIMO-OFDM System Over Multipath Transmission Channels 


Vol. 32,  No. 7, pp. 762-769, Jul.  2007


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  Abstract

Adaptive MIMO-OFDM (Orthogonal Frequency Division Multiplexing) system adaptively changes modulation scheme depending on feedback channel state information (CSI). The CSI feedback channel which is the reverse link channel has multiple symbol delays including propagation delay, processing delay, frame delay, etc. The unreliable CSI due to feedback delay degrades adaptive modulation system performance. This paper compares the MSE and data capacity with respect to delay and channel signal to noise ratio for the two multi-step channel prediction schemes, CTSBP and BTSBP, such that robust adaptive SISO-OFDM/MIMO-OFDM is designed over severe mobile multipath channel conditions. This paper presents an interpolation method to reduce feedback overhead for adaptive MIMO-OFDM and shows MSE with respect to interpolation interval.

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  Cite this article

[IEEE Style]

H. Kim and S. Choe, "A Robust Adaptive MIMO-OFDM System Over Multipath Transmission Channels," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 7, pp. 762-769, 2007. DOI: .

[ACM Style]

Hyun-dong Kim and Sangho Choe. 2007. A Robust Adaptive MIMO-OFDM System Over Multipath Transmission Channels. The Journal of Korean Institute of Communications and Information Sciences, 32, 7, (2007), 762-769. DOI: .

[KICS Style]

Hyun-dong Kim and Sangho Choe, "A Robust Adaptive MIMO-OFDM System Over Multipath Transmission Channels," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 7, pp. 762-769, 7. 2007.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880