Coded QPSK-OFDM for data transmission over fading channels

Jayakody, Dushantha Nalin K.; Iheme, Leonardo O.; Ince, Erhan A.

doi:10.1109/iciafs.2010.5715673

Cited by 4 publications

(3 citation statements)

References 8 publications

(4 reference statements)

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“…It has been shown in [10] that without concatenation, convolutional codes perform better than Reed Solomon codes in fading channels. Even though the outer RS encoder reduces the data rate by a factor of k/n the net data rate is controlled by the inner, more powerful convolutional encoder whose code rate is k/n [11].In both cases (WiMAX and DVB-T) the inner coder is a ½ rate convolutional code (G1=171oct; G2=133oct).…”

Section: Concatenated Reed Solomon and Convolutional Codingmentioning

confidence: 99%

Image Transmission over Fading Channels using RS-CC versus LDPC Coding

Ince

Nurellari

Iheme

2011

Signal and Image Processing

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In this paper we present effective means of digital image transmission by means of Forward Error Correcting (FEC) schemes and Orthogonal Frequency Division Multiplexing (OFDM). The transmission was simulated over the AWGN and a Rayleigh fading channel whose power delay profile was adopted from the ITU channel model. The FEC and OFDM parameters were adopted from the DVB-T, WiMAX, and DVB-T2 standards. The results presented herein are in terms of BER, PSNR and visual performances. It is evident from the presented results that effective FEC schemes are necessary for reliable transmission of digital media in a mobile wireless scenario.

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Section: Concatenated Reed Solomon and Convolutional Codingmentioning

confidence: 99%

Image Transmission over Fading Channels using RS-CC versus LDPC Coding

Ince

Nurellari

Iheme

2011

Signal and Image Processing

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“…There is also greater possibility that OFDM will be used in many application systems like IEEE 802.11n WLAN, UTRAN-LTE, and IEEE 802.16 mobile WiMax have received significant attention due to much higher spectral efficiency and transfer reliability [1]. OFDM system does not own low bit error rates (BER).…”

Section: Introductionmentioning

confidence: 99%

“…Over the years there are many applications and researches for RS-CC with OFDM like [1,2,3] and all used Non Recursive Convolution code (NCC). Now, in this letter a recursive convolution code has been suggested instead of non recursive convolution code to improve the BER for OFDM system as it will be explained further in the following sections.…”

Section: Introductionmentioning

confidence: 99%

Improved concatenated (RS-CC) for OFDM systems

Hassib

Mandeep

Abdullah

et al. 2012

IEICE Electron. Express

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Orthogonal Frequency Division Multiplexing (OFDM) system became an important material for the current researchers. As like other communication systems, OFDM system needs to employ the channel coding to reduce the Bit Error Rate (BER) such as the concatenated Reed Solomon-Convolution code (RS-CC). To enhance more the BER problem, a Reed Solomon-Recursive Convolution code (RS-RCC) over Additive white Gaussian noise (AWGN) and fading channel has been used in this letter with same complexity of (RS-CC). The simulation results prove that the suggested method for different kinds of constellation mapping of various coding rates gives better BER performance than the old method represented by RS-CC.

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