Performance of a 2&amp;#x00D7;2 STTC-MIMO-OFDM in 800-MHz-band urban mobile environment

Nakagawa, Takayuki; Kazuhiko, Mitsuyama; Kambara, Kohei; Ikeda, Tetsuomi

doi:10.1109/atc.2009.5349374

Cited by 2 publications

(1 citation statement)

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“…Although the conventional selection diversity scheme has the advantage of simplicity, it cannot theoretically outperform combining diversity schemes, such as maximal-ratio combining (MRC) [2]- [4]. Furthermore, our future wireless link system will likely use multiple-input-multiple-output (MIMO) technology to achieve high spectrum efficiency [5], [6], and MIMO shares certain techniques in common with the diversity scheme to determine the weight matrix. We have started to study a minimum-meansquare-error macrodiversity (MMSE-MD) reception system that combines received signals gathered from multiple BSs as a potentially reliable means of mobile wireless transmission and future large-scale distributed MIMO (D-MIMO) systems [7]- [11] exploiting the MD effect.…”

Section: Introductionmentioning

confidence: 99%

Development and Performance Evaluation of MMSE MacroDiversity Reception System With Delay Difference Correction

Kazuhiko

Ikeda

Ohtsuki

2013

IEEE Trans. Veh. Technol.

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We have been developing a minimum-mean-squareerror macrodiversity (MMSE-MD) reception system using distributed remote antennas and radio-on-fiber (RoF) links for use in live broadcasts of road races. The system selects remote antennas with good signal quality and combines their signals based on the MMSE algorithm to combat both small-scale and large-scale fading. For the system to be feasible, we have to consider propagation delay differences among diversity branches due to the RoF links and radio propagation. This paper describes a practical delay difference correction (DDC) technique that can keep signal continuity in any situation, the hardware implementation of an MMSE-MD receiver embodying the technique, and indoor and outdoor performance evaluations. Our prototype receiver perfectly corrected the propagation delay differences among diversity branches without losing signal continuity and maintained MD reception without signal outage across a wide area on an actual road-race course.Index Terms-Field experiment, macrodiversity (MD), minimum mean square error (MMSE), orthogonal frequency-division multiplexing (OFDM), prototyping, radio-on-fiber (RoF).

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Section: Introductionmentioning

confidence: 99%