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In this paper, we focus on MIMO-OFDM systems that simultaneously perform channel estimation, space-time coding and adaptive pre-distortion in order to combat additive noise, multipath fading and nonlinear effect of HPA. The performance improvement is confirmed by simulations. Results show that the proposed MIMO-OFDM scheme is quite robust in simulation environments.
This paper proposes a structure of adaptive beamforming system especially tailored for IEEE 802.11 n compliant WLAN operating in multiple input-multiple output (MIMO) orthogonal frequency division multiplexing (OFDM) mode. The proposal defines beamforming system for 802.11 n transceiver exploiting space time block coding (STBC) of MIMO technology. The proposed structure is based on adaptive computation...
It is known that tail-biting codes T' constructed from trellis coded modulation (TCM) with a delay processor can achieve large minimum Euclidean distances. In this paper, concatenated space-time block coding (STBC) with T' for multiple-input multiple-output (MIMO) and MIMO-OFDM (orthogonal frequency-division multiplexing) systems is investigated. We propose an improved system which is implemented...
Broadband wireless access (BWA) technique has attracted great attention in the last mile access industry. In this paper, an effective MAP receiver for concatenated space time block code (STBC) and convolutional code MIMO-OFDM system (denoted as CSCM receiver) for further performance improvement of IEEE wireless MAN-OFDMA system is derived and designed in detail. Simulation results show that the receiver...
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