Title :
Alternate MIMO AF Relaying Networks With Interference Alignment: Spectral Efficient Protocol and Linear Filter Design
Author :
Ki-Hong Park ; Alouini, Mohamed-Slim
Author_Institution :
Comput., Electr., & Math. Sci. & Eng. (CEMSE) Div, King Abdullah Univ. of Sci. & Technol., Thuwal, Saudi Arabia
Abstract :
In this paper, we study a two-hop relaying network consisting of one source, one destination, and three amplify-and-forward (AF) relays with multiple antennas. To compensate for the capacity prelog factor loss of 1/2 due to the half-duplex relaying, alternate transmission is performed among three relays, and the inter-relay interference due to the alternate relaying is aligned to make additional degrees of freedom. In addition, suboptimal linear filter designs at the nodes are proposed to maximize the achievable sum rate for different fading scenarios when the destination utilizes a minimum mean-square error filter.
Keywords :
MIMO communication; antenna arrays; protocols; radiofrequency interference; alternate MIMO AF relaying networks; amplify-and-forward relays; capacity prelog factor loss; fading scenarios; half-duplex relaying; interference alignment; linear filter design; minimum mean-square error filter; multiple antennas; spectral efficient protocol; suboptimal linear filter designs; two-hop relaying network; Fading; Interference; Iterative methods; Optimization; Protocols; Relays; Vectors; Alternate transmission; amplify-and-forward (AF) relaying; interference alignment (IA); linear filter design;
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2012.2227860
