Vaneet Aggarwal, Gajanana Krishna, Srikrishna Bhashyam, Ashutosh Sabharwal
Published 2008-11-26Version 1
Two distinct models of feedback, suited for FDD (Frequency Division Duplex) and TDD (Frequency Division Duplex) systems respectively, have been widely studied in the literature. In this paper, we compare these two models of feedback in terms of the diversity multiplexing tradeoff for varying amount of channel state information at the terminals. We find that, when all imperfections are accounted for, the maximum achievable diversity order in FDD systems matches the diversity order in TDD systems. TDD systems achieve better diversity order at higher multiplexing gains. In FDD systems, the maximum diversity order can be achieved with just a single bit of feedback. Additional bits of feedback (perfect or imperfect) do not affect the diversity order if the receiver does not know the channel state information.
Comments: In Proceedings of Asilomar Conference on Signals, Systems, and Computers, Oct. 2008, Pacific Grove, CA
On Cooperative Beamforming Based on Second-Order Statistics of Channel State Information
Improved Active Sensing Performance in Wireless Sensor Networks via Channel State Information - Extended Version
Achievable Rate Analysis for Cooperative Relay Assisted Opportunistic-NOMA over Rician Fading Channels with Channel State Information
![QR code for arXiv:0811.4200 [cs.IT]](http://oss.arxitics.com/images/favicon.svg)