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Nonlinear channel equalization for wireless communication systems using Legendre neural networks

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Nonlinear channel equalization for wireless communication systems using Legendre neural networks
นักวิจัย : Patra, Jagdish Chandra , Meher, Pramod Kumar , Chakraborty, Goutam
คำค้น : DRNTU::Engineering::Electrical and electronic engineering::Wireless communication systems
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2552
อ้างอิง : Patra, J. C., Meher, P. K., & Chakraborty, G. (2009). Nonlinear channel equalization for wireless communication systems using Legendre neural networks. Signal Processing, 89(11), 2251-2262. , 0165-1684 , http://hdl.handle.net/10220/7126 , http://dx.doi.org/10.1016/j.sigpro.2009.05.004 , 142401
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Signal processing
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

In this paper, we present a computationally efficient neural network (NN) for equalization of nonlinear communication channels with 4-QAM signal constellation. The functional link NN (FLANN) for nonlinear channel equalization which we had proposed earlier, offers faster mean square error (MSE) convergence and better bit error rate (BER) performance compared to multilayer perceptron (MLP). Here, we propose a Legendre NN (LeNN) model whose performance is better than the FLANN due to simple polynomial expansion of the input in contrast to the trigonometric expansion in the latter. We have compared the performance of LeNN-, FLANN- and MLP-based equalizers using several performance criteria and shown that the performance of LeNN is superior to that of MLP-based equalizer, in terms of MSE convergence rate, BER and computational complexity, especially, in case of highly nonlinear channels. LeNN-based equalizer has similar performance as FLANN in terms of BER and convergence rate but it provides significant computational advantage over the FLANN since the evaluation of Legendre functions involves less computation compared to trigonometric functions.

บรรณานุกรม :
Patra, Jagdish Chandra , Meher, Pramod Kumar , Chakraborty, Goutam . (2552). Nonlinear channel equalization for wireless communication systems using Legendre neural networks.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Patra, Jagdish Chandra , Meher, Pramod Kumar , Chakraborty, Goutam . 2552. "Nonlinear channel equalization for wireless communication systems using Legendre neural networks".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Patra, Jagdish Chandra , Meher, Pramod Kumar , Chakraborty, Goutam . "Nonlinear channel equalization for wireless communication systems using Legendre neural networks."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2552. Print.
Patra, Jagdish Chandra , Meher, Pramod Kumar , Chakraborty, Goutam . Nonlinear channel equalization for wireless communication systems using Legendre neural networks. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2552.