Acta Metallurgica Sinica(English letters) ›› 2014, Vol. 21 ›› Issue (5): 37-42.doi: 10.1016/S1005-8885(14)60328-9

• Wireless • Previous Articles     Next Articles

Hybrid scheme for three-cell multi-user MIMO cellular networks

Yanjun Ma   

  • Received:2014-01-08 Revised:2014-05-18 Online:2014-10-31 Published:2014-10-30
  • Contact: Yanjun Ma E-mail:bj_ma@126.com
  • Supported by:

    Study of interference management in wireless communications

Abstract: Orthogonal schemes are usually adopted for cell-edge users in a cellular network, where the spectrum is poorly utilized. A new interference alignment (IA) based space-division hybrid (IA-SDH) scheme is proposed by joint design transmit precoding matrices and beamforming matrices for a three-cell constant cellular network, where users at cell-center work with a conventional scheme while users at cell-edge utilize an IA scheme. Therefore, the cell-edge users suffer no interference and cell-center users are only affected by negligible inter-cell interference. Analysis simulation shows that more users can be served simultaneously than that of a conventional scheme in certain user distributions.

Key words: iterference alignment, degree of freedom, interference channel