Published online by Cambridge University Press: 05 May 2013
Introduction
Multiple input multiple output (MIMO) communication has been established both theoretically and practically as a means to increase data rates and improve reliability in wireless networks. While single input single output (SISO) wireless communication techniques rely on time domain or frequency domain processing to precode and decode the transmitted and received data signals, multiple antenna communication provides an extra spatial dimension to improve the wireless link performance in terms of error rate, coverage, and/or spectral efficiency.
As interest in MIMO communication has grown, upcoming cellular standards have embraced using multiple antennas at the base stations (BSs) and the mobile user terminals to increase the data rates and improve the performance of the radio link [1]. Multiple antennas are also being considered in small cell networks (SCNs) and femtocell networks as a means to improve coverage and manage interference [2, 3]. The development of MIMO techniques for two-tier networks needs to take into account the specific topology of the network, characterized by irregularity in terms of deployment, operation mode (closed access vs. open access), channel state information (CSI) availability, and backhaul connectivity. In this chapter, we provide an overview of MIMO communication techniques in two-tier networks. We present the state of the art in terms of MIMO precoding and coordination techniques to manage interference in heterogeneous networks. We illustrate the various gains and the associated challenges from using linear precoding with perfect and imperfect channel state information at the transmitter (CSIT) in femtocell networks and evaluate the potential role that multi-antenna communication is bound to play in two-tier networks.
To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.