Performance Comparison Between Distributed Antenna and Microcellular Systems

Zhu, Huiling

doi:10.1109/jsac.2011.110604

Cited by 257 publications

(114 citation statements)

References 11 publications

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“…It is assumed the scale factor w = 0.1 for all simulations. The thresholds s jj,DL of H-inf precoding is 1, and the thresholds of H-inf CE s jj,UL and s qj,UL are set to be not larger than 1 3) . For all k, d jqk = 1 when j = q, and d jqk = a when j = q , and a = 0.1 from Figure 3 to Figure 6.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Since multiple-input multiple-output (MIMO) technology is capable of significantly improving the capacity and reliability of wireless systems, it has been widely studied and applied to the existing wireless systems [1][2][3]. In order to achieve more gains as well as to simplify the required signal processing, massive MIMO has been proposed in [4][5][6][7][8] As a highly spectrally efficient technology, massive MIMO is indispensable for future wireless communication system or architecture [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

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On the use of H-inf criterion in channel estimation and precoding in massive MIMO systems

Wang

Feng³

2016

Sci. China Inf. Sci.

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In this paper, a channel estimation (CE) and precoding scheme by using H-infinity (H-inf) criterion for mitigation of pilot contamination (PC) in massive multiple input multiple output (MIMO) orthogonal frequency division multiplexing (OFDM) systems is investigated. Firstly, different thresholds in H-inf CE and precoding are considered. Secondly, asymptotic analysis is presented to simplify the H-inf precoding, which shows that the complexity of an order of magnitude is reduced. Thirdly, approximate downlink achievable data rates per user are studied for different CE and precoding schemes, such as H-inf and minimum mean square error (MMSE) CE, MMSE, zero-forcing (ZF) and H-inf precoding. The analysis shows that the proposed scheme can provide dual mitigation to the PC. That is, the H-inf CE mitigates the PC by adjusting its thresholds, and the H-inf precoding is utilized to suppress the PC by considering inter-cell interference. The numerical results show that joint use of H-inf CE and H-inf precoding outperforms existing schemes in terms of mitigation to the PC.

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Section: Simulation Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On the use of H-inf criterion in channel estimation and precoding in massive MIMO systems

Wang

Feng³

2016

Sci. China Inf. Sci.

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“…Moreover, to achieve higher system capacity and energy efficiency, multiantenna technique was investigated in [20][21][22], and HTS with Ka/Q/V-band frequency with multiple antennas have attracted significant attention [23]. Authors in [24][25][26][27][28][29][30][31] investigate the performance of relay-based multiple antenna HSTC/RNs, since relay transmissions can effectively improve the throughput and the coverage of satellite communications.…”

Section: Background and Motivationmentioning

confidence: 99%

“…Based on the definition of ASER of an MPSK modulated system (i.e., (27) and (24)), (22) can be written as…”

Section: Derivation Of Asermentioning

confidence: 99%

Performance Analysis of Space Information Networks with Backbone Satellite Relaying for Vehicular Networks

Jiao

Gao

et al. 2017

Wireless Communications and Mobile Computing

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Space Information Network (SIN) with backbone satellites relaying for vehicular network (VN) communications is regarded as an effective strategy to provide diverse vehicular services in a seamless, efficient, and cost-effective manner in rural areas and highways. In this paper, we investigate the performance of SIN return channel cooperative communications via an amplify-andforward (AF) backbone satellite relaying for VN communications, where we assume that both of the source-destination and relaydestination links undergo Shadowed-Rician fading and the source-relay link follows Rician fading, respectively. In this SIN-assisted VN communication scenario, we first obtain the approximate statistical distributions of the equivalent end-to-end signal-to-noise ratio (SNR) of the system. Then, we derive the closed-form expressions to efficiently evaluate the average symbol error rate (ASER) of the system. Furthermore, the ASER expressions are taking into account the effect of satellite perturbation of the backbone relaying satellite, which reveal the accumulated error of the antenna pointing error. Finally, simulation results are provided to verify the accuracy of our theoretical analysis and show the impact of various parameters on the system performance.

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“…One approach is to redesign the network infrastructure, and the most popular methods currently deployed are femtocells, relays and distributed antenna systems (DAS). DAS has attracted much attention [2][3][4] because of its ability to produce high quality coverage, low interference and high signal-to-noise ratio (SNR) and, using different techniques such as higher order modulation, orthogonal frequency-division multiplexing (OFDM), advanced coding schemes and, more recently, multiple-input multiple-output (MIMO) schemes, it can widely improve wireless access rates.…”

Section: Introductionmentioning

confidence: 99%

Experimental analysis of single and multiple antenna units in uplink of radio-over-fiber distributed antenna system

Aighobahi

Assimakopoulos

Gomes

2015

2015 International Topical Meeting on Microwave Photonics (MWP)

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Abstract-Increasing the number of antennas either at the transmitter or receiver has been shown to improve system reliability without occupying additional spectrum. In this paper, we experimentally investigate the error vector magnitude (EVM) of single and multiple remote antenna units (RAU) focusing on uplink transmission. We demonstrate that for 64-QAM modulation, the EVM requirement of 6.5% could be achieved with multiple separated RAUs in situations where a single RAU fails to meet this requirement. The EVM result was obtained as the transmitting device was placed at different locations in a typical office environment with OFDM signals gathered through the RAUs and brought back to a central unit for processing. The EVM results show that using multiple RAUs and an efficient signal combining technique, here, maximal ratio combining (MRC), the EVM performance could reduce by approximately 2% when the distance between the RAUs was 0.3m and further reduced by 4% and 6% when the inter-RAU distance was 2m and 4m, respectively, compared to a single RAU.

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Performance Comparison Between Distributed Antenna and Microcellular Systems

Cited by 257 publications

References 11 publications

On the use of H-inf criterion in channel estimation and precoding in massive MIMO systems

On the use of H-inf criterion in channel estimation and precoding in massive MIMO systems

Performance Analysis of Space Information Networks with Backbone Satellite Relaying for Vehicular Networks

Experimental analysis of single and multiple antenna units in uplink of radio-over-fiber distributed antenna system

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