Amplify-and-Forward
Amplify and Forward Relaying Systems for Collocated Antennas
... The amplify-and-forward relaying (AF) and selection combining (S-AF) schemes based on maximal ratio combining (MRC) method for single- and multi-relay are ...
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Relay Selection and Power Allocation in Amplify and Forward Cognitive Radio Systems Based on Spectrum Sharing
... shown in Figure 1. The primary system, comprising of a primary user base station (PUBS) and a primary user receiver (PUR), supports the relaying functionality and has the license to operate in some spectrum bands. We ...
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Exploiting a priori information for iterative channel estimation in block fading amplify and forward cooperative networks
... As wireless channels suffer from multipath propagation, several methods to combat the detrimental effect of fad- ing have been proposed [1]. Cooperative communication [2] is a relatively new method where spatial ...
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Power minimization for OFDM modulated two way amplify and forward relay wireless sensor networks
... This paper studies a power minimization problem of an orthogonal frequency-division multiplexing modulated two-way amplify-and-forward relay wireless sensor network (WSN). The objective is to develop ...
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Full duplex amplify and forward relays with optimized transmission power under imperfect transceiver electronics
... We consider a two-hop relaying scheme where the source (S) reaches the destination (D) through a relay (R), without a direct link between the source and the destination. We focus on the downlink, i.e., the link base ...
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Capacity analysis for MIMO two hop two relay amplify and forward relaying systems
... to forward its information to the destination ...called amplify-and-forward (AF), systems use less complex relays that do not perform any sort of decod- ...
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Multiple relay selection in amplify and forward cooperative wireless networks with multiple source nodes
... Multihop relaying has emerged as a promising approach to achieve high-rate coverage in wireless communications [1,2]. Several amplify-and-forward (AF) and decode-and- forward (DF) relaying techniques ...
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Design of training sequences and channel estimation for amplify and forward two path relaying networks
... ISI cancellation where the ISI is mitigated by performing a forward-and-backward successive interference cancel- lation (FB-SIC). To improve the performance of FIC, a robust SIC algorithm was proposed where the ...
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Adaptive Equalization and Capacity Analysis for Amplify and Forward Relays
... to forward its information to the destina- tion ...called amplify-and-forward (AF) systems, on the other hand use less complex relays that do not perform any sort of decoding, but simply ...
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Joint source and relay design for two hop amplify and forward relay networks with QoS constraints
... Relay networks have recently attracted much attention because of their promising capability in achieving reliable communication and wide coverage for the next genera- tion of wireless systems [1,2]. Different types of ...
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Cooperative MIMO Relaying with Orthogonal Space-Time Block Codes in Wireless Channels with and without Keyholes
... Cooperative multiple-input multiple-output (MIMO) relaying is investigated in the paper. We introduce DF- AF selection MIMO relaying, where the relay equipped with multiple antennas can adaptively switch between ...
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A new blind algorithm for channel estimation in OFDM based amplify and forward two way relay networks
... AF: Amplify-and-forward; AWGN: Additive white Gaussian noise; BER: Bit error rate; CIR: Channel impulse response; CP: Cyclic prefix; CSI: Channel state information; DA: Data-aided; DF: ...
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Two way amplify and forward relaying with carrier offsets in the absence of CSI: differential modulation based schemes
... for amplify-and-forward two-way relaying (TWR) networks with unknown channel state information (CSI) and carrier frequency offsets caused by wireless terminals in high-speed vehicles and ...
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Tight performance bounds for two way opportunistic amplify and forward wireless relaying networks with TDBC protocols
... AFNC: amplify-and-forward NC; BC phase: broadcast phase; CDF: cumulative distribution function; DFNC: decode-and-forward NC; MABC: multi-access broadcast; MGF: moment generating function; MIMO: ...
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Outage analysis of a dual hop OFDM amplify and forward relay system with subcarrier mapping in Rayleigh fading
... Orthogonal frequency division multiplexing (OFDM) is the key element of long-term evolution (LTE) while a multi-hop network increases the coverage area of transmission and provides significant performance improvement as ...
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Optimization of a MIMO amplify and forward relay system with channel state information estimation error and feedback delay
... designs of MIMO amplify-and-forward (AF) relay net- works were proposed [5–9]. To take CSI mismatch into account, robust design of a three-node MIMO relay sys- tem against CSI mismatch for linear ...
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Capacity Analysis for MIMO Two Hop Amplify and Forward Relaying Systems with the Source to Destination Link
... Abstract—This paper presents an ergodic capacity analysis of an amplify-and-forward multiple-input, multiple-output two-hop system including the source to destination (direct) link. We first derive an ...
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The Indoor Use Development for Visible Light Communication
... For operation of the signal transmitting sector as shown in Fig. 1, the data signal from computer was adjusted by encoding it with binary Manchester codes. The encoded data were then sent as electrical signal x(t) to the ...
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Pilot based channel estimation for AF relaying using energy harvesting
... for amplify-and- forward relaying, pilots are often sent from the relay to the destination which consumes the relay’s own ...for amplify-and-forward relay- ing are proposed that harvest energy ...
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Performance Analysis of Cooperative Relaying over α-µ Fading Channel
... and forward protocol (MRC-DF) outperforms maximal ratio combining – amplify and forward protocol (MRC-AF) and similarly selection combining – decode and forward (SC- DF) outperforms ...
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