A Simple Cooperative Relaying with Alamouti Coded Transmission

Yamaoka, Tomoya; Hara, Yoshitaka; Fukui, Noriyuki; Kubo, Hiroshi; Yamazato, Takaya

doi:10.1587/transcom.e95.b.643

Cited by 17 publications

(4 citation statements)

References 7 publications

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“…1, [10]. The considered system includes one BS, two RSs and one MS. BS is equipped with two transmit antennas, while the two RSs and MS are equipped with one antenna.…”

Section: Cooperative Relaying With Virtual Ostbcmentioning

confidence: 99%

Increasing Code Rate of the Cooperative Relaying with Virtual OSTBC

Veljović

Urosevic

2015

Wireless Pers Commun

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In this paper we propose new schemes for increasing code rate of the cooperative relaying with virtual orthogonal space time block coding (OSTBC). The proposed schemes are used for creating virtual 4 9 1 multiple input-single output channel, and include one base station (BS) with two antennas, two relay stations (RS) each with a single antenna and one mobile station with a single antenna. One of the main disadvantages of the virtual OSTBC is its 1/2 code rate, so we propose new schemes with code rates 1, 4/5, 2/3 and 4/7 on the first hop, while the code rate on the second hop remains 1/2. The simulation results show that the proposed schemes maintain BER performance very close to the scheme with virtual OSTBC, e.g. in the case of BER value of 10 -4 and Ricean channel parameter between BS and RSs of 10 dB the difference in the required signal to noise ratio between the proposed scheme with the greatest code rate and the virtual OSTBC is 0.25 dB, while for the proposed scheme with 4/7 code rate on the first hope this difference is only 0.05 dB.

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“…1, [10]. The considered system includes one BS, two RSs and one MS. BS is equipped with two transmit antennas, while the two RSs and MS are equipped with one antenna.…”

Section: Cooperative Relaying With Virtual Ostbcmentioning

confidence: 99%

Increasing Code Rate of the Cooperative Relaying with Virtual OSTBC

Veljović

Urosevic

2015

Wireless Pers Commun

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“…In the STBC-based cooperative relaying scheme, multiple relay stations operate together using the STBC technique so that a receiving station (next relay station or destination station) benefits from the transmit diversity gain. The performance of the STBC-based cooperative relaying scheme was investigated in depth via computer simulations [6]. The results showed that the end-to-end error performance is considerably improved by using the STBCbased cooperative relaying scheme.…”

Section: Introductionmentioning

confidence: 99%

Distributed Cooperative Relaying Based on Space-Time Block Code: System Description and Measurement Campaign

2021

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In cooperative relaying, intermediate stations are required to enhance the end-to-end transmission performance. The performance of the cooperative relaying scheme has been investigated theoretically and via computer simulations. However, cooperative relaying using transmit diversity techniques in actual environments has not been investigated thus far. This paper presents an experimental system for distributed cooperative relaying using space-time block code and evaluations of its transmission performances in real propagation channels. To this end, four wireless stations-specifically, one source, two relays, and one destination-were developed using analog transceivers and field-programmable gate arrays for real-time digital signal processing. Sample timing and frequency synchronizations among the four wireless stations were established by using the received signals as a reference. The end-to-end error performance of distributed cooperative relaying was compared to those of noncooperative relaying schemes, and the performances of three relaying schemes were evaluated quasisimultaneously in terms of their cumulative distribution functions of the bit-error ratios (BERs). The experimental results indicated that the BER performance of the two-hop distributed cooperative relaying scheme was substantially superior to those of noncooperative two-hop relaying schemes, including a route diversity scheme.

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“…Implementation and experimental results of cooperative relaying are reported in several papers [2,3,4]. Space-time code is useful for signal-level (i.e., PHY-layer) cooperation [5], and its implementation issues are investigated in [3]. However, to the best of the authors' knowledge, the error rate performance of signal-level cooperation is not well verified in actual environments.…”

Section: Introductionmentioning

confidence: 99%

Packet error rate performance of multi-stage cooperative relaying: Outdoor measurement

Murata

Miyagoshi

2020

IEICE ComEX

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The packet error rate (PER) performance of space-time block code based multi-hop cooperative relaying is studied. In the case of multiple relays at each hop, a unique feature of the end-to-end PER performance can be observed up to 3rd hop. In this letter, an outdoor measurement campaign is conducted to verify this PER performance. In addition, a cooperative relaying scheme with received data sharing among relays is also examined. It is experimentally shown that PER at the 3rd hop is better than that of the 1st hop.

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A Simple Cooperative Relaying with Alamouti Coded Transmission

Cited by 17 publications

References 7 publications

Increasing Code Rate of the Cooperative Relaying with Virtual OSTBC

Increasing Code Rate of the Cooperative Relaying with Virtual OSTBC

Distributed Cooperative Relaying Based on Space-Time Block Code: System Description and Measurement Campaign

Packet error rate performance of multi-stage cooperative relaying: Outdoor measurement

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