Cross-Layer Resource Allocation for MB-OFDM UWB Systems

Khalil, Ayman; Crussière, Matthieu; Hélard, Jean-François

doi:10.5772/16632

Cited by 2 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To retrieve the data, a receiver can put technical implementation as removing ZP overlap and add, channel estimation, equalization, de-spread, de-mapping, de-interleaving, de-puncture, de-coding. Since UWB channels take a some special propagation process and models which possess considerable difference with the conventional narrowband models, many investigation on the propagation and the channel models for UWB signaling have been delivered since the late 1990s [14].…”

Section: Mimo Mb-ofdm Systemmentioning

confidence: 99%

See 1 more Smart Citation

Dynamic Optimization of Overlap-And-Add Length Over Mimo Mbofdm System Based on SNR and CIR Estimate

Naziha¹,

Bouallègue²

2015

IJWMN

View full text Add to dashboard Cite

An important role performed by Zero Padding (ZP) in multi-band OFDM (MB-OFDM) System. This role show for low-complexity in résistance against multipath interference by reducing inter-carrier interference (ICI) and eliminating the inter-symbol interference (ISI) Also, zero-padded suffix can be used to eliminate ripples in the power spectral density in order to conform to FCC requirements. At the receiver of MB-OFDM system needs to use of a technique called as overlap-and-add (OLA). Which maintain the circular convolution property and take the multipath energy of the channel. In this paper, we proposed a method of performing overlap-and-add length for zero padded suffixes. Then, we studied the effect of this method, dynamic optimization of overlap-and-add (OLA) equalization, on the performance of MIMO MBOFDM system on Bit Error Rate (BER) with AWGN channel and Saleh-Valenzuela (S-V) Multipath channel Model. In the dynamic optimization OLA, the Length of ZP depends on length of channel impulse response (CIR). These measures, based on SNR, insert the ZP according to the measurement. Dynamic optimization of length of ZP improves the Performance of MIMO MBOFDM system. In fact we developed a technique to select the length of ZP as function of SNR and CIR estimate. In our simulation this technique improve to 0.6 dB at BER=10-2 with a multipath channels CM4.

show abstract

Section: Mimo Mb-ofdm Systemmentioning

confidence: 99%

“…e k =r k -y k (14) ĥ k+1 = ĥ k+ µe k x* k (15) Where e k is an appreciation error, r k is the received signal, y k is the approximation of received signal, x k is the channel estimation input sequence, and µ is an adaptative step-size.…”

Section: Least Mean Square (Lms)mentioning

confidence: 99%

Dynamic Optimization of Overlap-And-Add Length Over Mimo Mbofdm System Based on SNR and CIR Estimate

Naziha¹,

Bouallègue²

2015

IJWMN

View full text Add to dashboard Cite

show abstract

Dynamic Optimization of Overlap-and-Add Length Over MBOFDM System Based on SNR and CIR Estimate

Naziha¹,

Bouallègue²

2014

Computer Science &Amp; Information Technology ( CS &Amp; IT )

View full text Add to dashboard Cite

An important role performed by Zero Padding (ZP) in multi-band OFDM (MB-OFDM) System. This role show for low-complexity in résistance against multipath interference by reducing inter-carrier interference (ICI) and eliminating the inter-symbol interference (ISI) Also, zeropadded suffix can be used to eliminate ripples in the power spectral density in order to conform to FCC requirements. At the receiver of MB-OFDM system needs to use of a technique called as overlap-and-add (OLA). Which maintain the circular convolution property and take the multipath energy of the channel. In this paper, we proposed a method of performing overlap-and-add length for zero padded suffixes. Then, we studied the effect of this method, dynamic optimization of overlap-and-add (OLA) equalization, on the performance of MBOFDM system on Bit Error Rate (BER) with AWGN channel and Saleh-Valenzuela (S-V) Multipath channel Model. In the dynamic optimization OLA, the Length of ZP depends on length of channel impulse response (CIR). These measures, based on SNR, insert the ZP according to the measurement. Dynamic optimization of length of ZP improves the Performance of MBOFDM system. In fact we developed a technique to select the length of ZP as function of SNR and CIR estimate(repetition). In our simulation this technique improve to 3 dB at BER=10-2 with a multipath channels CM4.

show abstract

Cross-Layer Resource Allocation for MB-OFDM UWB Systems

Cited by 2 publications

References 15 publications

Dynamic Optimization of Overlap-And-Add Length Over Mimo Mbofdm System Based on SNR and CIR Estimate

Dynamic Optimization of Overlap-And-Add Length Over Mimo Mbofdm System Based on SNR and CIR Estimate

Dynamic Optimization of Overlap-and-Add Length Over MBOFDM System Based on SNR and CIR Estimate

Contact Info

Product

Resources

About