Performance optimization of physical layer using turbo codes: a case study of Wi-Max mobile environment

Kene, Jagdish D.; Kulat, K. D.

doi:10.1109/et2ecn.2012.6470084

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…Convolution codes have memory that uses previous bits to encode or decode following bits. These codes are implemented by employing a binary encoder that takes a stream of information bits and converts it into a stream of transmitted bits(a codeword) [2]. Encoder consists of a shift register bank that generates the transmitted codeword according to the generator polynomials.…”

Section: Convolution Codesmentioning

confidence: 99%

“…Turbo code provides high data rates for low order modulation schemes such as BPSK or QPSK. Turbo code is implemented by employing (i) Parallel concatenated encoder structure that uses two convolution encoders and an inter leaver to produce coded data at low power level, and (ii) Soft input soft output iterative decoders [2]. The operation of the turbo decoder is based on iterative decoding which is considered as the main feature of turbo codes.…”

Section: Turbo Codesmentioning

confidence: 99%

“…Mobile WiMAX also provides great deal of flexibility, scalability and good quality of services [2]. Orthogonal frequency division multiplexing has been implemented to achieve high bit rate of transmission in multipath fading environment.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Performance Evaluation of Physical Layer of Mobile WiMAX System by Implementing Hybrid Channel Coding Scheme

Kene¹,

Kulat²

2014

IJCA

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The demand of wireless communication is high data rate along with error free communication. An error in communication can be reduced by employing proper channel coding techniques. In this paper, authors have proposed the hybrid channel coding scheme in which convolution codes and turbo codes are combined to perform together. This scheme helps to provide smooth communication with high data rate even under different channel conditions. The SNR is the threshold parameter for adaptive encoding which can be measured by the channel estimation techniques for mobile WiMAX system. Authors have also taken efforts for adding adaptive code rate and modulation schemes for optimizing the mobile WiMAX system. Use of proper adaptive coding for optimizing the performance of mobile WiMAX system can be achieved. For this newly introduced hybrid scheme, the analysis and simulation are carried out with respective to standard AWGN channel which shows improved Bit Error Rate performance and also overcomes the drawbacks such as high complexity, decoding delay and power requirement.

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Section: Convolution Codesmentioning

confidence: 99%

Section: Turbo Codesmentioning

confidence: 99%