Outage performance of the distributed antenna systems in a composite fading channel

Roh, Wonil; Paulraj, A.

doi:10.1109/vetecf.2002.1040470

Cited by 148 publications

(9 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…21) is an accurate closed-form expression of ergodic capacity of DAS under imperfect CSI, and can agree the simulation very well. When the CSI is perfectly known with σ e…”

supporting

confidence: 57%

“…2, we plot the theoretical ergodic capacity and corresponding simulation of the DAS with different receive antennas and estimation errors, where path loss exponent α=2, N=1, 2, perfect CSI (σ e 2 =0) and imperfect CSI (σ e 2 =0.3) are compared. The theoretical ergodic capacity is calculated by (21). As shown in Fig.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…For the downlink, an approximate outage probability is derived for DAS with single receive antenna over composite Rayleigh fading channels in [20]. For the uplink, the approximate outage probability is analyzed and derived for DAS in composite Rayleigh fading channels [21] [22], in composite Nakagami fading channels [23], and in composite generalized-gamma fading channels [24], where the mobile terminal (MT) is equipped with one antenna only. In [25], a closed-form approximation of the outage probability for the DAS downlink and uplink is derived, and this approximation is tight only when the rate or the number of nodes and antennas of the system becomes large.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Downlink Capacity Analysis of Distributed Antenna Systems with Imperfect Channel State Information

2016

KSII TIIS

View full text Add to dashboard Cite

In this paper, considering that perfect channel state information (CSI) is hard to achieve in practice, the downlink capacity of distributed antenna systems (DAS) with imperfect CSI and multiple receive antennas is investigated over composite Rayleigh fading channel. According to the performance analysis, using the numerical calculation, the probability density function (PDF) of the effective output SNR is derived. With this PDF, accurate closed-form expressions of ergodic capacity and outage probability of DAS with imperfect CSI are, respectively, obtained, and they include the ones under perfect CSI as special cases. Besides, the outage capacity of DAS in the presence of imperfect CSI is also derived, and a Newton's method based practical iterative algorithm is proposed to find the accurate outage capacity. By utilizing the Gaussian distribution approximation, another approximate closed-form expression of outage capacity is also derived, and it may simplify the calculation of accurate outage capacity. These theoretical expressions can provide good performance evaluation for downlink DAS for both perfect and imperfect CSI. Simulation results verify the effectiveness of the theoretical analysis, and the system capacity can be improved by increasing the receive antennas, and decreasing the estimation error or path loss. Moreover, the system can tolerate the estimation error variance up to about 0.01 with a slight degradation in the capacity.

show abstract

“…21) is an accurate closed-form expression of ergodic capacity of DAS under imperfect CSI, and can agree the simulation very well. When the CSI is perfectly known with σ e…”

supporting

confidence: 57%

Section: Simulation Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Downlink Capacity Analysis of Distributed Antenna Systems with Imperfect Channel State Information

2016

KSII TIIS

View full text Add to dashboard Cite

show abstract

“…Antennas are deployed at the center of a cell in traditional cellular networks. Compared to traditional cellular networks, the distributed antenna system (DAS) can reduce transmission power, expand cell coverage, improve system SE, and this system has been studied widely [4], [5]. The concept of DAS has been written into the standard of LTE-A [6], and a few practical problems related to the design of DAS have been studied as well [7], [8].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis Based on RAU Selection and Cooperation in Distributed Antenna Systems

2018

KSII TIIS

View full text Add to dashboard Cite

In this paper, the downlink performance of multi-cell distributed antenna systems (DAS) with a single user in each cell is investigated. Assuming the channel state information is available at the transmitter, four transmission modes are formulated as combinations of remote antenna units (RAUs) selection and cooperative transmission, namely, non-cooperative transmission without RAU selection (NCT), cooperative transmission without RAU selection (CT), non-cooperative transmission with RAU selection (NCT_RAUS), and cooperative transmission with RAU selection (CT_RAUS). By using probability theory, the cumulative distribution function (CDF) of a user's signal to interference plus noise ratio (SINR) and the system ergodic capacity under the above four modes are determined, and their closed-form expressions are obtained. Furthermore, the system energy efficiency (EE) is studied by introducing a realistic power consumption model of DAS. An expression for determining EE is formulated, and the closed-form tradeoff relationship between spectral efficiency (SE) and EE is derived as well. Simulation results demonstrate their consistency with the theoretical analysis and reveal the factors constraining system EE, which provide a scientific basis for future design and optimization of DAS.

show abstract

“…In [4], spacetime block coded (STBC) MIMO is proposed for uplink DAS. In [5], it is shown that the outage performance of the system can be enhanced greatly by adopting DAS.…”

Section: Introductionmentioning

confidence: 99%

Adaptive transmission in distributed MIMO multiplexing

Adachi

Zhu

Wang

et al. 2010

2010 IEEE International Conference on Communication Systems

View full text Add to dashboard Cite

Abstract-Distributed antenna system (DAS) or distributed multiple-input multiple-output (MIMO) can enhance the cellular throughput performance, thanks to the largely separated multiple remote antenna units (RAU) which can experience the different large scale fading and the small scale fading. So far, much research work has been published in the DAS. However, to the authors' best knowledge, there is no research work which deals with the impact of the large scale fading effect on the throughput performance when practical data modulation, adaptive modulation, and signal detection schemes are used. How the bits should be allocated to the different RAUs is an important research topic in the DAS. In this paper, we consider two bit allocation methods: statistical channel based allocation and instantaneous channel based allocation. How the bits are allocated to each RAU are expressed by using simple equations based on statistical and instantaneous channel. Using numerical computation, how the large scale fading and bit allocation methods affect the throughput performance of distributed MIMO system are evaluated.

show abstract

Outage performance of the distributed antenna systems in a composite fading channel

Cited by 148 publications

References 13 publications

Downlink Capacity Analysis of Distributed Antenna Systems with Imperfect Channel State Information

Downlink Capacity Analysis of Distributed Antenna Systems with Imperfect Channel State Information

Performance Analysis Based on RAU Selection and Cooperation in Distributed Antenna Systems

Adaptive transmission in distributed MIMO multiplexing

Contact Info

Product

Resources

About