Performance Evaluation for STBC OFDM-CDMA System over Multi-Path Fast Fading Channel with the Aid of Various Channel Coding Techniques
Hussein, N., El-Sherif, A., Fayez, A. (2009). Performance Evaluation for STBC OFDM-CDMA System over Multi-Path Fast Fading Channel with the Aid of Various Channel Coding Techniques. EKB Journal Management System, 13(AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT- 13, May 26 – 28, 2009), 1-16. doi: 10.21608/asat.2009.23528
Nelly Muhammad Hussein; Adel El-Sherif; Abd El-Wahab Fayez. "Performance Evaluation for STBC OFDM-CDMA System over Multi-Path Fast Fading Channel with the Aid of Various Channel Coding Techniques". EKB Journal Management System, 13, AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT- 13, May 26 – 28, 2009, 2009, 1-16. doi: 10.21608/asat.2009.23528
Hussein, N., El-Sherif, A., Fayez, A. (2009). 'Performance Evaluation for STBC OFDM-CDMA System over Multi-Path Fast Fading Channel with the Aid of Various Channel Coding Techniques', EKB Journal Management System, 13(AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT- 13, May 26 – 28, 2009), pp. 1-16. doi: 10.21608/asat.2009.23528
Hussein, N., El-Sherif, A., Fayez, A. Performance Evaluation for STBC OFDM-CDMA System over Multi-Path Fast Fading Channel with the Aid of Various Channel Coding Techniques. EKB Journal Management System, 2009; 13(AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT- 13, May 26 – 28, 2009): 1-16. doi: 10.21608/asat.2009.23528

Performance Evaluation for STBC OFDM-CDMA System over Multi-Path Fast Fading Channel with the Aid of Various Channel Coding Techniques

International Conference on Aerospace Sciences and Aviation Technology
Article 31, Volume 13, AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT- 13, May 26 – 28, 2009, May 2009, Page 1-16  XML PDF (259.84 K)
Document Type: Original Article
DOI: 10.21608/asat.2009.23528
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Authors
Nelly Muhammad Hussein1; Adel El-Sherif2; Abd El-Wahab Fayez3
1Lecturer assistant, Modern Academy for Engineering and Technology.
2Prof., Modern Academy for Engineering and Technology.
3Prof., Faculty of Engineering - Cairo University.
Abstract
In this paper, a mitigation method for minimizing the distortion caused by frequency selective fast fading is illustrated. The proposed system combines between two types of diversity schemes; frequency diversity represented by the orthogonal frequency division multiplexing (OFDM) scheme and antenna diversity represented by space time block coding (STBC) scheme these are for mitigating the distortion caused by frequency selective fading. The multiplexing technique proposed here is the code division multiple access (CDMA) scheme which is considered the solution for eliminating the distortion caused by fast fading. The main problem of the OFDM system is the high peak-to-average power ratio (PAR). In the proposed system, three techniques used for reducing the PAR are applied together. And in order to reduce the bit error rate caused by intersymbol interference (ISI) or multiple access interference (MAI) channel coding is applied which can make error detection and correction at the receiver and simulation results have shown that by applying any of channel coding techniques, the bit error rate (BER) has reached a satisfying level at a low signal-to-noise ratio (SNR).
Keywords
OFDM; CDMA; STBC; and PAR
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