Analysis of uplink multicarrier successive interference cancellation CDMA system with carrier frequency offsets

2004 ◽  
Author(s):  
R.M.A. Tannious ◽  
M.A. Mokhtar
Keyword(s):  
Carrier Frequency ◽  
Interference Cancellation ◽  
Successive Interference Cancellation ◽  
Cdma System ◽  
Carrier Frequency Offsets ◽  
Frequency Offsets

scholarly journals Carrier Frequency Offsets Problem in DCT-SC-FDMA System: Investigation and Compensation

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
Faisal S. Al-kamali ◽  
Moawad I. Dessouky ◽  
Bassiouny M. Sallam ◽  
Farid Shawki ◽  
Fathi E. Abd El-Samie
Keyword(s):  
Carrier Frequency ◽  
Interference Cancellation ◽  
Multiple Access ◽  
Minimum Mean Square Error ◽  
Multiple Access Interference ◽  
Low Complexity ◽  
Estimation Errors ◽  
Carrier Frequency Offsets ◽  
Frequency Offsets ◽  
The Impact

The Single-Carrier Frequency Division Multiple Access (SC-FDMA) system is a well-known system, which has recently become a preferred choice for uplink channels. In this system, the Carrier Frequency Offsets (CFOs) disrupt the orthogonality between subcarriers and give rise to Intercarrier Interference (ICI), and Multiple Access Interference (MAI) among users. In this paper, the impact of the CFOs on the performance of the Discrete Cosine Transform (DCT) SC-FDMA (DCT-SC-FDMA) system is investigated. Then, a new low-complexity joint equalization and CFOs compensation scheme is proposed to cancel the interference in frequency domain. The Minimum Mean Square Error (MMSE) equalizer is utilized in the proposed scheme. A hybrid scheme comprising MMSE equalization, CFOs compensation, and Parallel Interference Cancellation (PIC) is also suggested and investigated for further enhancement of the performance of the DCT-SC-FDMA system with interleaved subcarriers assignment. For simplicity, this scheme will be referred to as the MMSE+PIC scheme. From the obtained simulation results, it is found that the proposed schemes are able to enhance the system performance, even in the presence of the estimation errors.

An Interference Rejection Combining Technique for an SFBC-OFDM System with Multiple Carrier Frequency Offsets

2016 ◽  
Vol E99.B (2) ◽  
pp. 481-487
Author(s):  
Mina LEE ◽  
Rothna PEC ◽  
Kyu Seok KIM ◽  
Chang Hwan PARK ◽  
Yong Soo CHO
Keyword(s):  
Carrier Frequency ◽  
Interference Rejection ◽  
Ofdm System ◽  
Carrier Frequency Offsets ◽  
Frequency Offsets
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