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We present a new transmit diversity downlink multiple input single output (MISO) timedivision multiplexing CDMA (CDMA/TDD) system using beamformer, Pre-RAKE diversity combining, and zero correlation duration (ZCD) orthogonal spreading sequence at basestation, while employing one matched filter (MF) based simple terminal receiver. Adopting techniques such as ZCD code, chip-level beamformer (CLB) array...
The 2×2 MIMO channel capacity is studied for millimeter wave radio propagation between two stations (STA-STA) on a table in a conference room. It is focused on whether a small antenna spacing enables a high MIMO channel capacity or not. The effect of reflection is also investigated on the MIMO channel capacity. For reflection, both two cases are considered: the reflection without scattering (where...
The capacity of a millimeter wave propagation channel with multiple antennas is investigated focusing on the minimum antenna spacing required for taking a full advantage of multi-input multi-output (MIMO) systems. Especially, the effect of reflected paths is studied on the required minimum antenna spacing. A signal following a reflected path is assumed not to experience scattering which accompanies...
In this paper, we present a new scheme for uplink SIMO CDMA/TDD transmission using Pre-RAKE diversity combining and new orthogonal spreading sequences at terminal, and simple space-time array receiver at base station. Adopting techniques such as so-called zero correlation duration (ZCD) code as spreading code, chip-level beamformer (CLB) array antenna configuration, and one single matched filter for...
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