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A systolic array to implement lattice-reduction-aided linear detection is proposed for a MIMO receiver. The lattice reduction algorithm and the ensuing linear detections are operated in the same array, which can be hardware-efficient. All-swap lattice reduction algorithm (ASLR) is considered for the systolic design. ASLR is a variant of the LLL algorithm, which processes all lattice basis vectors...
In this paper, we present bit error rate (BER)- minimized space-time-frequency (STF) block codes for multi- input multi-output (MIMO) highly frequency-selective block- fading channels. We consider the IEEE 802.15.3 a ultra-wide band (UWB) channel models (CM) 1-4. Based on a new STF block codes design criterion with the objective of minimizing BER, we develop an efficient searching algorithm for the...
In this paper, we study the universal optimal STF block codes design for the MIMO- OFDM systems under the IEEE 802.15.3a UWB channel model. We provide a design criterion, an efficient searching algorithm for the optimal STF block codes, and optimal BER performance curves. Among our proposed optimal STF block codes, we find that almost all of them need nonlinear operations. We also find that the BER...
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