An Experimental Investigation of SIMO, MIMO, Interference-Alignment (IA) and Coordinated Multi-Point (CoMP)

• DOI: 10.48550/arxiv.1111.3616
• Publication Date: 2011-01-01
• Authors: Per Zetterberg; Nima N. Moghadam
• Keywords: FOS: Computer and information sciences; Computer Science - Information Theory; Information Theory (cs.IT); 0202 electrical engineering, electronic engineering, information engineering; 02 engineering and technology

In this paper we present experimental implementations of interference alignment (IA) and coordinated multi-point transmission (CoMP). We provide results for a system with three base-stations mobile-stations all having two antennas. further employ OFDM modulation, high-order constellations, measure many positions both line-of-sight non-line-of-sight under limited conditions. find the CoMP to perform better than IA at cost higher back-haul capacity requirement. During measurements also logged channel estimates off-line processing. use these calculate performance ideal The obtained way is substantially what actually observed in end-to-end transmissions---in particular case where theoretical very high. reason discrepancy be impact dirty-RF effects such as phase-noise non-linearities. are able model some extent. These models can used simulate more complex systems still account (e.g., tens mobiles base-stations). Both reference single-user SIMO MIMO our measurements.