System-level modeling of IEEE 802.16E mobile wimax networks: Key issues

Jain, Raj; So-In, Chakchai; Al-Tamimi, Abdel-Karim

doi:10.1109/mwc.2008.4653135

Cited by 53 publications

(29 citation statements)

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“…Division of payload data in a packet between source data, original redundant data and piggybacked data for a previous erroneous packet decode failure is no longer certain. If according to (8), m < k then a packet is corrupted to such an extent that it is effectively dropped. However, this was found in simulations to be a rare event.…”

Section: Redundant Raptor Codementioning

confidence: 99%

“…mobile WiMAX [8]. WiMAX is being deployed in rural areas [9] and regions that lack a 3G infrastructure.…”

Section: Introductionmentioning

confidence: 99%

“…However, given the predicted increase in data rates arising from IEEE 802.16m, the number of unicast video users [8] with 4×2 Multi User (MU)-MIMO antennas, will be 44 at 384 kbps and 22 at 768 kbps in an urban environment. For a similar configuration but using 20 MHz rather than 80 MHz channels, the authors of [10] reported the number of unicast video users per antenna sector to be 11 and 6 depending on datarates.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Adaptive rateless coding for constant bit rate data-partitioned wireless IPTV

Al-Jobouri

Fleury

Ghanbari

2011

2011 Wireless Telecommunications Symposium (WTS)

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Abstract-Constant Bit-Rate (CBR) video is often preferred by broadcasters, as it allows resources to be reserved. This paper applies an adaptive channel coding scheme to CBR video. Compared to some existing schemes advantages include: the coding rate is changed according to the channel conditions; it is byte-based rather than block-based, for reduced latency; and a single retransmission allows a further attempt at reconstruction. The scheme is demonstrated on data-partitioned video, resulting in a number of trade-offs between: frame sequence structure; inclusion of intra-refresh macroblocks; and partition coding isolation. With an appropriate choice of bit-rate reasonable video quality is achieve, including for a temporally active video sequence.

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Section: Redundant Raptor Codementioning

confidence: 99%

“…mobile WiMAX [8]. WiMAX is being deployed in rural areas [9] and regions that lack a 3G infrastructure.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Adaptive rateless coding for constant bit rate data-partitioned wireless IPTV

Al-Jobouri

Fleury

Ghanbari

2011

2011 Wireless Telecommunications Symposium (WTS)

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“…The physical layer, a Media Access Control layer (MAC) and the application layer in the network system based on mobile WiMAX IEEE 802.16e was a very important rule to be consideration for simulation models design [3]. Sharef et al [4] studied the ICoSE Conference Proceedings physical layer performance of WiMAX IEEE 802.16e that refer to channel model of ITU (International Telecommunication Union).…”

Section: Introductionmentioning

confidence: 99%

Performance of OFDM-Based WiMAX System Using Cyclic Prefix

Maharmi¹

2016

KEG

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The WiMax (Worldwide Interoperability for Microwave Access) is a technology in broadband wireless access, which employs OFDM (Orthogonal Frequency Division Multiplexing) as an alternative transmission to enable high speed data in communication system. This research aim is to analyze the performance system of the OFDM-Based WiMAX, which used the cyclic prefix. The model was designed in four schemes of simulation method, the BPSK (Binary Phase Shift Keying, QPSK (Quadrature Phase Shift Keying), 16 QAM (Quadrature Amplitude Modulation) and 64 QAM. Each scheme was investigated BER (Bit Error Rate) on AWGN (Additive White Gaussian Noise) channel and multipath Rayleigh fading channel, which had applied the cyclic prefix. By simulation of the cyclic prefix was produced the modulation measurement of the BPSK, QPSK, 16 and 64 QAM. The performance result of Eb/No 15 dB was obtained the BER of BPSK and QPSK of 1.11E-11, the BER of 16 QAM and 64 QAM of 8.69E-06 and 0.00333 respectively. Those results indicated much smaller BER value than EbNo 0 dB which BPSK and QPSK of 1 BER, 1.5 and 1.75 BER for 16 QAM and 64 QAM respectively. In conclusion, a higher value of EbNo, hence the BER value would be lower.

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“…Modulation schemes such as Quadrature Phase Shift Keying (QPSK) and Quadrature Amplitude Modulation (QAM) are also supported in OFDMA with variable channel coding rates [6] [7] which offer channel protection for improved video communications. Factors such as Signal-to-Noise Ratio (SNR) determine the performance of a wireless transmission [8]. SNR takes the relative factors such as path loss, cable loss into account [9].…”

Section: Introductionmentioning

confidence: 99%

Smart Broadcast Technique for Improved Video Applications over Constrained Networks

Ukommi¹

2013

IJACSA

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Abstract-improved wireless video communication is challenging since video stream is vulnerable to channel distortions. Hence, the need to investigate efficient scheme for improved video communications. This research work investigated broadcast schemes, and proposes smart broadcast technique as a solution for improved video quality over constrained network such as wireless network under tight constraints. The scheme exploits the concept of video analysis and adaptation principles in the optimization process. The experimental results obtained under different channel conditions demonstrate the capability of the proposed scheme in terms of improving the average received video quality performance over a constrained network.

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System-level modeling of IEEE 802.16E mobile wimax networks: Key issues

Cited by 53 publications

References 0 publications

Adaptive rateless coding for constant bit rate data-partitioned wireless IPTV

Adaptive rateless coding for constant bit rate data-partitioned wireless IPTV

Performance of OFDM-Based WiMAX System Using Cyclic Prefix

Smart Broadcast Technique for Improved Video Applications over Constrained Networks

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