Title :
Rate Maximizing with Adaptive Bit Partition in Cooperative Distributed Antenna System
Author :
Xin Gui ; Guixia Kang
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In multi-user cooperative distributed antenna system (DAS) with limited feedback, multi- user interference (MUI) within the service cell and inter-cell interference (ICI) from adjacent cells are inevitable because of the quantization error. Considering this, we propose an adaptive bit partition scheme,which allocates more bits to quantize the stronger interference channels and changes with channel conditions. Based on our derived upper-bound of average data rate loss, the simulation results show that the proposed scheme has at least 0.5~1dB rate improvement than other average-bit partition schemes, especially in high signal to noise ratio (SNR) region.
Keywords :
adjacent channel interference; antennas; cellular radio; cooperative communication; feedback; quantisation (signal); DAS; MUI; SNR region; adaptive bit partition scheme; adjacent cells; channel conditions; high signal to noise ratio region; intercell interference; interference channels; limited feedback; multiuser cooperative distributed antenna system; multiuser interference; quantization error; rate maximization; service cell interference; upper-bound; Adaptive arrays; Antenna feeds; Computer architecture; Interference; Signal to noise ratio; Wireless communication;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing (WiCOM), 2012 8th International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-61284-684-2
DOI :
10.1109/WiCOM.2012.6478633
