Performance Analysis of OFDM-Based Decode-and-Forward Relay Network with Multiple Interferers over Rayleigh Fading Channels

Tu, Jia; Cai, Yueming; Yang, Weiwei

doi:10.1155/2011/202549

Cited by 4 publications

(1 citation statement)

References 28 publications

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“…In the article "Performance Analysis of OFDM-based Decode-and-Forward Relay Network with Multiple Interferers over Rayleigh Fading Channel" by Tu et al [8], the authors analyze an orthogonal frequency-division multiplexing (OFDM)-based decode-and-forward relay network impaired by frequency-selective Rayleigh fading and multiple uncorrelated equal power interferers. In particular, a unified closed-form expression of average symbol error rate for M-ary phase-shift-keying (M-PSK) modulation is derived and employed to study the performance of such systems.…”

mentioning

confidence: 99%

Cooperative MIMO multicell networks

Verde

Hong

Samardžija³

et al. 2012

EURASIP J. Adv. Signal Process.

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mentioning

confidence: 99%

Cooperative MIMO multicell networks

Verde

Hong

Samardžija³

et al. 2012

EURASIP J. Adv. Signal Process.

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Downlink Throughput Enhancement of a Cellular Network using Two-Hop User-Deployable Indoor Relays

Devar

Karthik

Ramamurthi

et al. 2013

IEEE J. Select. Areas Commun.

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In this paper, we propose two-hop user-deployable indoor relays for CDMA systems with signal bandwidth 5 MHz or less. We assume concurrent relaying wherein macro base stations (BS) are allowed to transmit when a relay is forwarding. The two-hop indoor relay is studied using a generalized model for outdoor-to-indoor communication in a frequency-selective channel in the presence of co-channel interference. We propose an equalize-and-forward relay that employs multiple-antenna interference-aware equalization before forwarding. We present a unified solution to minimize interference (due to concurrent transmissions) at the relay-served destination and the BS-served destination, using power control and exploiting spatial reuse. A systematic method to enable indoor relays with the proposed interference management solutions is presented that is applicable to existing CDMA systems, without additional requirements in Access Terminal (AT)/User Equipment. Simulation results in the context of High Rate Packet Data (HRPD) CDMA network shows that the ATs served through the indoor relays experience throughput improvement by at least a factor of two, whereas the ATs served by the BS experienced a gain of around 6% in spite of concurrent relaying. The results also show an overall system throughput gain upto 30% when compared to the existing network with only single hops.

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Downlink throughput enhancement of an OFDMA cellular system with closed-access indoor relays

Karthik

Ramamurthi

2013

2013 IEEE 14th Workshop on Signal Processing Advances in Wireless Communications (SPAWC)

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We propose user-deployable closed-access indoor relays for throughput improvements in the downlink of LTE (long-term evolution) cellular system. The relays are assumed to be placed proximate to the destination user equipments (UEs). We propose a two-hop non-regenerative relaying scheme where the relay, equipped with multiple antennas, performs optimum combining to maximize the SINR (signal-to-interference-plusnoise ratio) before forwarding to a UE. The relaying is performed in a concurrent manner, where the base station (BS) transmits to some other receiver simultaneously when the relay is transmitting, and is therefore spectrally efficient. In order that the users served by a BS do not experience additional co-channel interference (CCI) because of the transmissions of the closedaccess relays, we present an interference management scheme that can be implemented with minimal changes in the scheduling algorithm of a BS. Computer simulations, performed with largescale deployment of indoor relays in the LTE framework, show that the UEs served by the relays see an improvement of over 100% in their respective throughputs, while the average cellular throughput improves by 24% when compared with a baseline system without relays. Also, the UEs served by the BSs do not experience any loss in their throughputs.Index Terms-Indoor relays, interference management, LTE

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Performance Analysis of OFDM-Based Decode-and-Forward Relay Network with Multiple Interferers over Rayleigh Fading Channels

Cited by 4 publications

References 28 publications

Cooperative MIMO multicell networks

Cooperative MIMO multicell networks

Downlink Throughput Enhancement of a Cellular Network using Two-Hop User-Deployable Indoor Relays

Downlink throughput enhancement of an OFDMA cellular system with closed-access indoor relays

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