Partial Information Relaying with Per Antenna Superposition Coding

Kim, Dong In; Choi, Wan; Seo, Hanbyul; Kim, Byoung-Hoon

doi:10.1109/tcomm.2010.102910.090210

Cited by 6 publications

(2 citation statements)

References 10 publications

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“…Contrary to the dynamic CF based protocol, the protocol in [10] does not require global CSI at relay but DMT in multi-relay networks where relays interfere with one another was not addressed well. As a practical alternative of CF, partial information forwarding for halfduplex relay was proposed in [11], [12]. In addition to CF and QM, network coding can be used for cooperative diversity, and there are various studies on cooperative diversity using network coding [13]- [15].…”

Section: Introductionmentioning

confidence: 99%

Overcoming Half-Duplex Loss in Multi-Relay Networks: Multiple Relay Coded Cooperation for Optimal DMT

Hong

Choi

2015

IEEE Trans. Commun.

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This paper studies diversity-multiplexing tradeoff (DMT) of decode-and-forward (DF)-based half-duplex relay networks without a direct path from source to destination. We propose a new multiple relay coded cooperation (MRCC) protocol to overcome the half-duplex loss in DF relay networks and show that the proposed MRCC protocol achieves the MISO/SIMO DMT upper bound as the number of assisting relays increases. The loss of multiplexing gain from the half-duplex constraint is recovered by coded cooperation and successive cancellation. Despite its notable gain in terms of DMT, the proposed MRCC protocol requires only limited feedback information/signaling for relay and operation mode selection. We also derive the achievable DMT of the proposed MRCC protocol when each node has multiple antennas. It is shown that the proposed MRCC protocol achieves K times diversity gain of the point-to-point N × N MIMO case. Compared with existing protocols, the MRCC protocol shows much higher diversity gain for almost all multiplexing gains. Furthermore, our numerical results verify that the proposed MRCC protocol outperforms existing protocols in terms of outage probability for the environments of practical interest.Index Terms-Relay network, half-duplex channel, diversitymultiplexing tradeoff (DMT), multiple relay coded cooperation (MRCC) protocol, successive cancellation, opportunistic relay selection.

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Section: Introductionmentioning

confidence: 99%

Overcoming Half-Duplex Loss in Multi-Relay Networks: Multiple Relay Coded Cooperation for Optimal DMT

Hong

Choi

2015

IEEE Trans. Commun.

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“…A proper power allocation to basic and superposed data for rate maximization was investigated. This work was extended to multiple-antenna relay networks when the perfect CSI is not available at the source, and partial-information relaying with per-antenna superposition coding was first proposed in [17] by taking into account interstream interference and power allocation between basic and superposed data. In [18], the authors proposed partial-information relaying based on stream control and developed a simple linear precoding scheme for partialinformation relaying when the CSI is available at the source.…”

Section: Introductionmentioning

confidence: 99%

Partial Stream Relaying in MIMO Relay Communications

Ryu

Choi

Kim

2013

IEEE Trans. Veh. Technol.

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For a decode-and-forward (DF)-based multipleinput-multiple-output (MIMO) relaying system, we propose a novel partial-information relaying scheme that adaptively controls the number of streams to be forwarded to the destination. In the first transmission phase, a source node broadcasts data streams that consist of nonforwarding and forwarding streams. In the second transmission phase, a relay node forwards only forwarding streams to the destination, and a destination node decodes both nonforwarding and forwarding streams by successive interference cancellation. We consider two possible scenarios according to the availability of the channel-state information (CSI) at the source. The first scenario is that no CSI is available at the source, and therefore, a source node broadcasts data streams with equal power allocation. In this scenario, the number of data streams to be forwarded by the relay is determined according to the available CSI at the relay. For the second scenario, where the perfect CSI is available at the source, we propose a linearly combined precoding matrix for rate maximization. We also propose suboptimal schemes to reduce the complexity of the precoding design. Our analytical and numerical results show that the proposed scheme achieves a substantially higher rate than both the conventional relaying scheme, which forwards all the received streams, and the direct transmission scheme without relaying, regardless of CSI availability at the source.Index Terms-Decode-and-forward (DF)-based relaying, linear precoding, multiple-input-multiple-output (MIMO).

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Bit Concatenation Based User Relaying in MIMO Broadcast Channels

Ryu

Choi

2012

IEEE Trans. Commun.

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Partial Information Relaying with Per Antenna Superposition Coding

Cited by 6 publications

References 10 publications

Overcoming Half-Duplex Loss in Multi-Relay Networks: Multiple Relay Coded Cooperation for Optimal DMT

Overcoming Half-Duplex Loss in Multi-Relay Networks: Multiple Relay Coded Cooperation for Optimal DMT

Partial Stream Relaying in MIMO Relay Communications

Bit Concatenation Based User Relaying in MIMO Broadcast Channels

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