Ergodic Capacity of LTE Downlink Multiuser MIMO Systems

Lin, Zihuai; Vucetic, Branka; Mao, Jian

doi:10.1109/icc.2008.629

Cited by 12 publications

(3 citation statements)

References 17 publications

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“…No uplink data transmission is assumed in the special subframe. Open loop power control according to 3GPP TS 36.213 [1] without close loop correction is modeled. Synchronous HARQ with chase combining and 4 HARQ processes is used.…”

Section: Performance Analysis and Comparisonsmentioning

confidence: 99%

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A novel scheduling scheme based on MU-MIMO in TD-LTE uplink

Wang

2011

2011 IEEE Wireless Communications and Networking Conference

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The virtual MIMO (V-MIMO) and coordinated multipoint transmission (CoMP) are adopted by the LTE system to extend the uplink spectral efficiency. V-MIMO makes use of spatial multiplexing to increase system throughput while CoMP by means of mitigating inter cell interference (ICI) significantly achieve the same effect. In this paper, we present an orthogonality based proportional fair scheduling (OPF) scheme for virtual MIMO and CoMP in TD-LTE uplink. To evaluate the effectiveness of the OPF algorithm, three schemes are analyzed and compared: conventional single input multiple output (SIMO), V-MIMO and CoMP. Finally, we evaluate and compare the potential gain in spectral efficiency for the SIMO, V-MIMO and CoMP using LTE semi-dynamic system level simulator.

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Section: Performance Analysis and Comparisonsmentioning

confidence: 99%

“…Considerable researches have shown that dramatic capacity gain can be achieved by using the multi-antenna techniques [1]- [2]. Single-carrier orthogonal frequency division multiple access (SC-OFDMA) can achieve a comparable performance to OFDMA for the same complexity, but with reduced peak-to-average power ratio (PAPR).…”

Section: Introductionmentioning

confidence: 99%

A novel scheduling scheme based on MU-MIMO in TD-LTE uplink

Wang

2011

2011 IEEE Wireless Communications and Networking Conference

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“…[14][15][16][17][18]. This section investigates the potential benefits of MUD in terms of improving the MCS selection reliability of the conventional LA approach.…”

Section: Conventional Link Adaptation In a Multi-user Systemmentioning

confidence: 99%

A Multiuser, Multicarrier Link Adaptation Strategy for Fading Channels with PER Constraints

Nicolaou

Doufexi

Armour

et al. 2011

2011 IEEE 73rd Vehicular Technology Conference (VTC Spring)

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Link Adaptation (LA) adopted by many emerging standards, such as WCDMA, LTE and WiMAX is a key element for providing improved data rates and performance guarantees based on specified Quality of Service (QoS) requirements. Link Adaptation can dynamically adjust a number of transmission parameters, most often modulation and coding, to reflect the characteristics of the wireless link to improve throughput and maintain link reliability. Most LA algorithms require only an estimate of the signal-to-noise ratio (SNR) to select an appropriate PHY mode, relying on the assumption of an AWGN channel. For channels experiencing frequency selective fading however, the conventional approach fails to accurately represent the stochastic nature across independent channels. A new channel quality metric is proposed in this paper that attempts to estimate the likelihood of packet errors in a fading channel and adjust Modulation and Coding Scheme (MCS) selection across each fading realisation independently. Results show improved mode selection efficiency over the conventional LA approach with added flexibility, as this approach is independent of the channel environment, providing a universal solution to LA.

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