Robust Joint Linear Precoding for AF MIMO Relay Broadcast Systems with Limited Feedback
نویسندگان
چکیده
This letter proposes a robust joint linear precoding scheme based on the minimum mean squared error (MMSE) criterion for amplifyand-forward (AF) multiple-input multiple-output (MIMO) relay broadcast systems with limited feedback, where only the quantized channel direction information (CDI) of the forward channel is available for the base station (BS) and the relay station (RS). The proposed scheme employs an iterative algorithm which alternately optimizes the BS and RS precoders to jointly minimize the expected MSE conditioned on the quantized CDI. key words: precoding, MIMO relay, MMSE, limited feedback
منابع مشابه
Robust Interference Management via Linear Precoding and Linear/Non-Linear Equalization
This work studies the robust design of linear precoding and linear/ non-linear equalization for multi-cell MIMO systems in the presence of imperfect channel state information (CSI). A worstcase design approach is adopted whereby the CSI error is assumed to lie within spherical sets of known radius. First, the optimal robust design of linear precoders is tackled for a MIMO interference broadcast...
متن کاملRobust Multi-Branch Tomlinson-Harashima Precoding in Cooperative MIMO Relay Systems
This paper proposes the design of robust transceivers with Tomlinson-Harashima precoding (THP) for multipleinput multiple-output (MIMO) relay systems with amplify-andforward (AF) protocols based on a multi-branch (MB) strategy. The MB strategy employs successive interference cancellation (SIC) on several parallel branches which are equipped with different ordering patterns so that each branch p...
متن کاملJoint optimization of source and relay precoding for AF MIMO relay systems
In this paper, we investigate a joint source and relay precoding design scheme for an amplify-and-forward (AF) multiple-input multiple-output (MIMO) relay system with absence of the direct link. The joint optimization problem, which is to minimize an objective function based on the mean square error (MSE), is formulated as a nonconvex optimization problem in the AF MIMO relay system. Instead of...
متن کاملLinear Precoding Techniques for 2-Hop MIMO Relaying
In this paper, we deal with the linear precoding techniques for 2-hop multiple-input multiple-output (MIMO) relaying, where limited feedback is available at source and relay nodes. Among the various linear precoding schemes, we utilize quantized precoding technique which is more implementable than precoding schemes with full feedback due to short feedback length. Based on quantized precoding te...
متن کاملRobust Multibranch Tomlinson-Harashima Precoding Design in Amplify-and-Forward MIMO Relay Systems
This paper proposes the design of robust transceivers with Tomlinson-Harashima precoding (THP) for multipleinput multiple-output (MIMO) relay systems with amplify-andforward (AF) protocols based on a multi-branch (MB) strategy. The MB strategy employs successive interference cancellation (SIC) on several parallel branches which are equipped with different ordering patterns so that each branch p...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- IEICE Transactions
دوره 94-B شماره
صفحات -
تاریخ انتشار 2011