A Joint Power Allocation and Adaptive Channel Coding Scheme for Image Transmission over Wireless Channels

El-Tarhuni, Mohamed; Hassan, Mohamed S.; Sediq, Akram Bin

doi:10.5121/ijcnc.2010.2307

Cited by 12 publications

(8 citation statements)

References 31 publications

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“…In [8], authors have discussed and compared some wireless channel models. In [9] flat Rayleigh fading channel is considered and analysed for image transmission. In [10], time-varying wireless channel is analyzed and evaluated for video transmission.…”

Section: Related Workmentioning

confidence: 99%

Channel Estimation and Multiuser Detection in Asynchronous Satellite Communications

Chaouech¹,

Bouallègue²

2010

IJWMN

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In this paper, we propose a new method of channel estimation for asynchronous additive white Gaussian noise channels in satellite communications. This method is based on signals correlation and multiuser interference cancellation which adopts a successive structure. Propagation delays and signals amplitudes are jointly estimated in order to be used for data detection at the receiver. As, a multiuser detector, a single stage successive interference cancellation (SIC) architecture is analyzed and integrated to the channel estimation technique and the whole system is evaluated. The satellite access method adopted is the direct sequence code division multiple access (DS CDMA) one. To evaluate the channel estimation and the detection technique, we have simulated a satellite uplink with an asynchronous multiuser access.

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Section: Related Workmentioning

confidence: 99%

Channel Estimation and Multiuser Detection in Asynchronous Satellite Communications

Chaouech¹,

Bouallègue²

2010

IJWMN

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“…In [19], a low complexity sub optimal algorithm based on a cross-layer approach that combines information provided by the PHY-MAC layers is discussed. In [20], jointly optimized power allocation and channel coding to improve the quality of images and video sequences when transmitted over wireless channels are discussed. Thus, it is critical to develop an efficient resource allocation and scheduling framework by jointly considering the selective ARQ mechanism at the media access control (MAC) layer and AMC technique at the physical layer that not only can maintain the minimum bandwidth requirements for nrtPS flows, but also initiate a graceful compromise between the resource utilization and delivery delay.…”

Section: Associated Work On the Scheduling And Arq Mechanismmentioning

confidence: 99%

A Bandwidth Efficient Scheduling Framework for Non Real Time Applications in Wireless Networks

Indumathi¹,

Murugesan²

2010

IJDPS

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The key concern on the bandwidth allocation and scheduling for non real time traffic are the fulfillment of its minimum throughput requirement and improvement of bandwidth utilization with acceptable delay. This paper proposes a simple and efficient scheduling framework for allocating bandwidth to non real time polling service (nrtPS) users in IEEE 802.16 networks. In this framework, jointly selective repeat ARQ at the MAC layer and adaptive modulation and coding techniques at the physical are considered. Numerical simulations demonstrate that the proposed scheduling approach provides a graceful compromise between bandwidth utilization and packet delivery delay while maintaining the minimum throughput requirements of nrtPS applications. Thus proves the efficiency of the proposed framework. The simulation is done for unicast scenario.

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“…Alleviating the effect of fading on the quality of signal transmission over wireless channels can be achieved through unequal power allocation mechanisms where power assignment could be carried based on the importance of transmitted information [13], [14].…”

Section: Introductionmentioning

confidence: 99%

An adaptive modulation scheme for image transmission over wireless channels

Zrae

Hassan

El-Tarhuni

2010

The 10th IEEE International Symposium on Signal Processing and Information Technology

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In this paper, we propose an adaptive modula tion scheme for image transmission over fading channels. The proposed scheme partitions the received signal-to-noise (SNR) space as well as the transmitted information based on its importance. Then, it jointly considers the channel condition and the importance of the transmitted bitstream when deciding on the modulation level. More specifically, the scheme partitions the compressed image information into different bit streams with unequal importance based on the properties of the human visual system. Then, it decides on the modulation level that meets a predefined target bit error rate (BER) using an offline lookup table. This predefined BER is based on the SNR level as seen by the receiver and the sensitivity of the transmitted bit stream. Simulation results show that the proposed scheme provides significant improvement in the spectral efficiency when compared to fixed-modulation based systems while maintaining relatively high peak signal-to-noise ratio (PSNR) and acceptable perceptual quality.

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A Joint Power Allocation and Adaptive Channel Coding Scheme for Image Transmission over Wireless Channels

Cited by 12 publications

References 31 publications

Channel Estimation and Multiuser Detection in Asynchronous Satellite Communications

Channel Estimation and Multiuser Detection in Asynchronous Satellite Communications

A Bandwidth Efficient Scheduling Framework for Non Real Time Applications in Wireless Networks

An adaptive modulation scheme for image transmission over wireless channels

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