A Moment Matching Technique to Estimate the Achievable Ergodic Rate for Limited Feedback Distributed Antenna Systems in the Presence of Out-of-Cell Interference

作者：Hemachandra Kasun T^*; Beaulieu Norman C

来源：IEEE Communications Letters, 2013, 17(7): 1360-1363.

DOI：10.1109/LCOMM.2013.052413.130298

• Distributed antenna systems
• ergodic rate
• limited feedback
• random vector quantization

The performance of a random vector quantization based transmit precoding distributed antenna system is investigated in terms of the achievable ergodic rate. An approximate expression is derived for the ergodic rate of the system considering the effects of path loss, Rayleigh fading and out-of-cell interference. A moment matching technique is used to approximate the desired signal power and the total interference power distributions of the system using a Gamma distribution. The proposed approximation estimates the performance of the system accurately and saves computational time in simulations.

• 出版日期2013-7