Experimental Verification of Spectrum Superposing in Two Different Systems by Blind Adaptive Array with Subcarrier Transmission Power Assignment

So, Hideya; Maruta, Kazuki; Mashino, Jun; Kouhei, Suzaki

doi:10.1109/vtcfall.2016.7881007

Cited by 1 publication

(1 citation statement)

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“…However, the practical performances of STPA-BAA appeared to be limited due to the hardware specifications, e.g., quantization or dynamic range of the transceiver. To elucidate this concern, the effectiveness of the STPA-BAA proposal was reported by fabricating and testing a prototype based on filter bank multicarrier transmission systems [20]. A major contribution of this paper is to expand its significance in terms of the detailed hardware implementation and results.…”

Section: Introductionmentioning

confidence: 99%

Laboratory Experiment of Blind Adaptive Array with Subcarrier Transmission Power Assignment in Spectrum Superposing Scenarios

Maruta

Kouhei

2018

Electronics

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This paper experimentally validates the basic feasibility of our proposed blind adaptive array (BAA) with subcarrier transmission power assignment (STPA) scheme using a prototype. The proposed STPA-BAA enables spectrum superposing without any channel state information between two different wireless communication systems: employing STPA-BAA to the secondary system, inter-system interference from/to the primary system can be suppressed. Exploiting the characteristics of constant modulus algorithm (CMA) and power inversion (PI), the secondary transmitter provides two levels of power density for each subcarrier: high and low levels. It enables the secondary receiver to suppress interference with almost the same level of the desired signal. It is also effective in reducing interference to the primary receiver that has no interference suppression function. This paper conducts laboratory experiments of spectrum superposition in two multicarrier systems by wired setup. Though the practical performance of STPA-BAA is limited due to the quantization level or dynamic range of the transceiver, effectiveness of the proposed scheme is confirmed.

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Section: Introductionmentioning

confidence: 99%