A computationally efficient detector for MIMO systems

Alabed, Samer

doi:10.11591/ijece.v9i5.pp4138-4146

Cited by 5 publications

(6 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In some scenarios, perfect channel state information (CSI) is assumed to be available at all nodes with slow fading channels [2,3,10,23]. In other scenarios, partial CSI is assumed to be available at the receiving antennas only [8,24,25]. Recently, the need for CSI data becomes unnecessary at both the sender and the receiver sides due to the usage of non-coherent and differential strategies [4][5][6][7][8][9][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Improved Bi-Directional Three-Phase Single-Relay Selection Technique for Cooperative Wireless Communications

Alabed¹,

Maaz²,

Al-Rabayah³

2022

Computers, Materials &Amp; Continua

Self Cite

View full text Add to dashboard Cite

Single-relay selection techniques based on the max-min criterion can achieve the highest bit error rate (BER) performance with full diversity gain as compared to the state-of-the-art single-relay selection techniques. Therefore, in this work, we propose a modified max-min criterion by considering the differences among the close value channels of all relays while selecting the best relay node. The proposed criterion not only enjoys full diversity gain but also offers a significant improvement in the achievable coding gain as compared to the conventional one. Basically, in this article, an improved bi-directional three-phase single-relay selection technique using the decodeand-forward protocol for wireless cooperative communication networks that enhances the overall network performance in terms of BER is proposed and its performance is proved analytically and through Monte-Carlo simulations. More specifically, the proposed criterion is first used to select the best relaynode. After that the selected relay-node forwards the information symbols of the communicating terminals after performing a digital network coding to minimize power consumptions. In our simulations, we show that our proposed technique outperforms the best-known single relay selection techniques. Furthermore, we prove that the BER results obtained from our conducted simulations perfectly match those obtained from the theoretical analysis.

show abstract

Section: Introductionmentioning

confidence: 99%

Improved Bi-Directional Three-Phase Single-Relay Selection Technique for Cooperative Wireless Communications

Alabed¹,

Maaz²,

Al-Rabayah³

2022

Computers, Materials &Amp; Continua

Self Cite

View full text Add to dashboard Cite

show abstract

“…In the recent years, several techniques have been proposed in the field of wireless communications to enhance the error performance of the whole system and its achievable throughput [1][2][3][4][5][6]. A group of these techniques works by increasing or optimizing the transmitted power, while another group is applying powerful forward error detection and correction techniques to increase the achievable gain.…”

Section: Introductionmentioning

confidence: 99%

A Beamforming Technique Using Rotman Lens Antenna for Wireless Relay燦etworks

Alabed¹,

Al-Rabayah²,

Aly³

2022

Computers, Materials &Amp; Continua

Self Cite

View full text Add to dashboard Cite

Rotman lens, which is a radio frequency beam-former that consists of multiple input and multiple output beam ports, can be used in industrial, scientific, and medical applications as a beam steering device. The input ports collect the signals to be propagated through the lens cavity toward the output ports before being transmitted by the antenna arrays to the destination in order to enhance the error performance by optimizing the overall signal to noise ratio (SNR). In this article, a low-cost Rotman lens antenna is designed and deployed to enhance the overall performance of the conventional cooperative communication systems without needing any additional power, extra time or frequency slots. In the suggested system, the smart Rotman lens antennas generate a beam steering in the direction of the destination to maximize the received SNR at the destination by applying the proposed optimal beamforming technique. The suggested optimal beamforming technique enjoys high diversity, as well as, low encoding and decoding complexity. Furthermore, we proved the advantages of our suggested strategy through both theoretical results and simulations using Monte Carlo runs. The Monte Carlo simulations show that the suggested strategy enjoys better error performance compared to the current state-of-the-art distributed multiantenna strategies. In addition, the bit error rate (BER) curves drawn from the analytical results are closely matching to those drawn from our conducted Monte Carlo simulations.

show abstract

“…However, with the need for higher data rate and better performance in the current wireless communication systems, investigating new channel coding techniques is essential for such needs. Many methods have been proposed in order to increase the data rate such as massive multiple-input multiple-output (MIMO) techniques [17][18][19][20][21][22][23][24][25][26][27][28], carrier aggregation and different encoding techniques. However, these techniques increase the complexity of the communication systems.…”

Section: Introductionmentioning

confidence: 99%

Distributed differential beamforming and power allocation for cooperative communication networks

Alabed

Maaz

Al-Rabayah

2020

IJECE

Self Cite

View full text Add to dashboard Cite

Many coherent cooperative diversity techniques for wireless relay networks have recently been suggested to improve the overall system performance in terms of the achievable data rate or bit error rate (BER) with low decoding complexity and delay. However, these techniques require channel state information (CSI) at the transmitter side, at the receiver side, or at both sides. Therefore, due to the overhead associated with estimating CSI, distributed differential space-time coding techniques have been suggested to overcome this overhead by detecting the information symbols without requiring any (CSI) at any transmitting or receiving antenna. However, the latter techniques suffer from low performance in terms of BER as well as high latency and decoding complexity. In this paper, a distributed differential beamforming technique with power allocation is proposed to overcome all drawbacks associated with the later techniques without needing CSI at any antenna and to be used for cooperative communication networks. We prove through our analytical and simulation results that the proposed technique outperforms the state-of-the-art techniques in terms of BER with comparably low decoding complexity and latency.

show abstract

A computationally efficient detector for MIMO systems

Cited by 5 publications

References 13 publications

Improved Bi-Directional Three-Phase Single-Relay Selection Technique for Cooperative Wireless Communications

Improved Bi-Directional Three-Phase Single-Relay Selection Technique for Cooperative Wireless Communications

A Beamforming Technique Using Rotman Lens Antenna for Wireless Relay燦etworks

Distributed differential beamforming and power allocation for cooperative communication networks

Contact Info

Product

Resources

About