Downlink ergodic capacity analysis for wireless networks with cooperative distributed antenna systems

2012 ◽  
Author(s):  
Xinsheng Zhao ◽  
Xiaqing Yang
Keyword(s):  
Wireless Networks ◽  
Ergodic Capacity ◽  
Capacity Analysis ◽  
Distributed Antenna Systems ◽  
Distributed Antenna ◽  
Antenna Systems

scholarly journals Capacity Analysis of Distributed Antenna Systems with Beamforming

2018 ◽  
Vol 232 ◽  
pp. 04039
Author(s):  
Meiyan Ju ◽  
Chao Chen ◽  
Yueheng Li ◽  
Guoping Tan
Keyword(s):  
Rayleigh Fading ◽  
Path Loss ◽  
Mathematical Expression ◽  
System Capacity ◽  
Capacity Analysis ◽  
Multiple Antenna ◽  
Distributed Antenna Systems ◽  
Multiple Antenna Systems ◽  
Distributed Antenna ◽  
Antenna Systems

Distributed antenna systems (DASs) can reduce the access distance, increase system capacity and improve system performance compared with conventional centralized multiple antenna systems. In this paper, the system capacity of downlink DAS with beamforming is investigated. The mathematical expression of system capacity is derived over the composite channel including Rayleigh fading, shadowing and path loss. At the same time, the interference from other APs is also considered for the studied AP. Numerical methods including Gauss-Hermite integral and composite Simpson’s rule are used to compute the system capacity of DAS under different MS distributions. Numerical results verify the precision of the mathematical analysis of system capacity by comparing Monte-Carlo simulation results. The results also show interference among APs shouldn’t be ignored when APs are close to each other or there are many APs.

scholarly journals Capacity Analysis of Distributed Antenna Systems with Multiple Receive Antennas over MIMO Fading Channel

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Xiangbin Yu ◽  
Xiaoshuai Liu ◽  
Yuyu Xin ◽  
Ming Chen ◽  
Yun Rui
Keyword(s):  
Closed Form ◽  
Approximate Expression ◽  
Ergodic Capacity ◽  
Moment Generating Function ◽  
Closed Form Expression ◽  
Outage Capacity ◽  
Form Expression ◽  
Distributed Antenna Systems ◽  
Distributed Antenna ◽  
Antenna Systems

The downlink performance and capacity of distributed antenna systems (DASs) with multiple receive antennas are investigated in multi-input multi-output (MIMO) fading and multicell environment. Based on the moment generating function and performance analysis, an exact closed-form expression of DAS ergodic capacity is derived, and it includes the existing capacity expression as a special case. Moreover, a simple closed-form approximate expression of ergodic capacity is also derived by using the Taylor series, and it has the performance result close to the exact expression. Besides, the outage capacity of DAS is analyzed, and an exact closed-form expression of outage capacity probability is derived. All these expressions can provide good theoretical performance evaluation for DAS. Simulation results corroborate our theoretical analysis.

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