Interference alignment (IA) and coordinated multi-point (CoMP) with IEEE802.11AC feedback compression: Testbed results

Author

Zetterberg, Per

Author_Institution

Access Linnaeus Center, KTH R. Inst. of Technol., Stockholm, Sweden

fYear

2014

fDate

4-9 May 2014

Firstpage

6176

Lastpage

6180

Abstract

We have implemented interference alignment (IA) and joint transmission coordinated multipoint (CoMP) on a wireless testbed using the feedback compression scheme of the new 802.11ac standard. The performance as a function of the frequency domain granularity is assessed. Realistic throughput gains are obtained by probing each spatial modulation stream with ten different coding and modulation schemes. The gain of IA and CoMP over TDMA MIMO is found to be 26% and 71%, respectively under stationary conditions. In our dense indoor office deployment, the frequency domain granularity of the feedback can be reduced down to every 8th subcarrier (2.5MHz), without sacrificing performance.

Keywords

MIMO communication; codes; frequency-domain analysis; radiofrequency interference; time division multiple access; wireless LAN; CoMP; IA; IEEE802.11ac feedback compression; TDMA MIMO; coding schemes; dense indoor office deployment; frequency domain granularity; interference alignment; joint transmission coordinated multipoint; realistic throughput gains; spatial modulation stream; stationary conditions; wireless testbed; Interference; MIMO; Signal to noise ratio; Standards; Throughput; Time division multiple access; Wireless communication; 802.11ac; coordinated multipoint; interference alignment; testbed;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing (ICASSP), 2014 IEEE International Conference on

Conference_Location

Florence

Type

conf

DOI

10.1109/ICASSP.2014.6854791

Filename

6854791