VISA MIMO OFDM Transmit Scheme for Wireless Communications

Bocquet, Wladimir; Jia, Yunjian; Hara, Shinsuke; Nakamura, Madoka

doi:10.1109/vetecs.2005.1543506

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Frequency Domain Visa Mimo Scheme1

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“…The principle of the frequency domain VISA MIMO OFDM [1] is to include the calculation of "null-steering" weights for each receive antennas and also each loaded subcarrier during the reception of the long preamble sequence. Because of the frequency selectivity of the channel, frequency domain channel estimation has to be added.…”

Section: Frequency Domain Visa Mimo Schemementioning

confidence: 99%

On the Performance Evaluation of VISA MIMO Scheme in Real Indoor Environments

Bocquet

Tran²,

Jia³

et al.

2005 Asia-Pacific Conference on Communications

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Recently, some of the authors have proposed a novel scheme, called frequency domain Virtual Sub-carrier Assignment (VISA) Multi-Input Multi-Output (MIMO) concept, to detect MIMO-OFDM signal [1]. The principle of the VISA structure is to deliberately color OFDM signals by different virtual subcarrier positions in the spectrum to enable Adaptive Array of Antennas (AAA) to accept an OFDM signal selectively [2]-[3]. Due to the promising results obtained by software simulations, we extend the performance examination of the frequency domain VISA concept, in this paper, into a real campaign measurement.To illustrate the performance of the proposed scheme, simulation results will be presented for QAM modulations.

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Section: Frequency Domain Visa Mimo Schemementioning

confidence: 99%