Antenna and Node Selection for Multi-Antenna Relay Networks in Correlated Channels
نویسندگان
چکیده
In this paper, we investigate the antenna and node selection issues for amplify-and-forward (AF) and decode-and-forward (DF) multi-antenna relay networks in correlated channels. Based on the channel statistics, optimal selection criteria for antenna and relay node are derived jointly, aiming to maximize the ergodic capacity. Instantaneous channel knowledge-based selection schemes, motivated by traditional antenna selection algorithms, are investigated as well. It is shown that the proposed node selection schemes derived from antenna selection on relay nodes are feasible and effective in relay systems. Statistical selection shows considerable capacity gain compared to full complexity scheme and random selection strategy in AF mode, while instantaneous selection performs better in DF relaying. Furthermore, the proposed schemes are shown to be robust to channel estimation errors due to their correlation-oriented nature. key words: multi-antenna relay, antenna selection, node selection, correlated channel
منابع مشابه
Sum-Rate Maximization Based on Power Constraints for Cooperative AF Relay Networks
In this paper, our objective is maximizing total sum-rate subject to power constraints on total relay transmit power or individual relay powers, for amplify-and-forward single-antenna relay-based wireless communication networks. We derive a closed-form solution for the total power constraint optimization problem and show that the individual relay power constraints optimization problem is a quad...
متن کاملTo Code or Not To Code in Multi-Hop Relay Channels
Multi-hop relay channels use multiple relay stages, each with multiple relay nodes, to facilitate communication between a source and destination. Previously, distributed space-time coding was used to maximize diversity gain. Assuming a low-rate feedback link from the destination to each relay stage and the source, this paper proposes end-to-end antenna selection strategies as an alternative to ...
متن کاملOn the Performance of Cooperative Amplify-and-Forward Relay Networks
This paper provides a general analysis of cooperative amplify-and-forward relay networks and gives a unified and comparative view of various proposed systems. The studied cooperative relay networks offer spatial diversity gains that conventional multi-antenna systems often fail to achieve due to limitations of the feasible number of antennas per terminal and correlated propagation. We first pre...
متن کاملError Probability of OSTB Codes and Capacity Analysis with Antenna Selection over Single-Antenna AF Relay Channels
Abstract—In this paper, the symbol error rate (SER) and the bit error rate (BER) of orthogonal space-time block codes (OSTBCs) and their achievable capacity over an amplify-andforward (AF) relay channel with multiple antennas at source and destination and single antenna at relay node are investigated. Considered are receive antenna selection, transmit antenna selection, and joint antenna select...
متن کاملResearch on a New Model and Network Coding Algorithm for Orthogonal Frequency Division Multiplexing System
The paper studies a new model and network coding algorithm for orthogonal frequency division multiplexing (OFDM) system. Cooperation diversity consists on using relay nodes to combat the effects of fading channels by means of spatial diversity. Physical-layer network coding is used to make the two-way s relay network achieving higher bandwidth efficiency than the traditional four-phase and thre...
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 93-B شماره
صفحات -
تاریخ انتشار 2010