Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 1-12 |
| Number of pages | 12 |
| Journal | EURASIP Journal on Wireless Communications and Networking |
| Early online date | 18 Apr 2016 |
| DOIs | |
| Publication status | Published - Apr 2016 |
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Keywords
- low computational complexity
- orthogonal frequency division multiplexing (OFDM)
- peak-to-average power ratio (PAPR)
- selective mapping (SLM)
- side information (SI) estimation
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A joint OFDM PAPR reduction and data decoding scheme with no SI estimation. / Adegbite, Saheed A.; McMeekin, Scott G.; Stewart, Brian G.
In: EURASIP Journal on Wireless Communications and Networking , 04.2016, p. 1-12.Research output: Contribution to journal › Article
TY - JOUR
T1 - A joint OFDM PAPR reduction and data decoding scheme with no SI estimation
AU - Adegbite, Saheed A.
AU - McMeekin, Scott G.
AU - Stewart, Brian G.
N1 - Author note: Full Open Access Publication from Publisher's Website Library note: Springer Open article, not appearing in the article approval service list
PY - 2016/4
Y1 - 2016/4
N2 - The need for side information (SI) estimation poses a major challenge when selected mapping (SLM) is implemented to reduce peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. Recent studies on pilot-assisted SI estimation procedures suggest that it is possible to determine the SI without the need for SI transmission. However, SI estimation adds to computational complexity and implementation challenges of practical SLM-OFDM receivers. To address these technical issues, this paper presents the use of a pilot-assisted cluster-based phase modulation and demodulation procedure called embedded coded modulation (ECM). The ECM technique uses a slightly modified SLM approach to reduce PAPR and to enable data recovery with no SI transmission and no SI estimation. In the presence of some non-linear amplifier distortion, it is shown that the ECM method achieves similar data decoding performance as conventional SLM-OFDM receiver that assumed a perfectly known SI and when the SI is estimated using a frequency domain correlation approach. However, when the number of OFDM subcarriers is small and due to the clustering in ECM, the modified SLM produces a smaller PAPR reduction gain compared with conventional SLM.
AB - The need for side information (SI) estimation poses a major challenge when selected mapping (SLM) is implemented to reduce peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. Recent studies on pilot-assisted SI estimation procedures suggest that it is possible to determine the SI without the need for SI transmission. However, SI estimation adds to computational complexity and implementation challenges of practical SLM-OFDM receivers. To address these technical issues, this paper presents the use of a pilot-assisted cluster-based phase modulation and demodulation procedure called embedded coded modulation (ECM). The ECM technique uses a slightly modified SLM approach to reduce PAPR and to enable data recovery with no SI transmission and no SI estimation. In the presence of some non-linear amplifier distortion, it is shown that the ECM method achieves similar data decoding performance as conventional SLM-OFDM receiver that assumed a perfectly known SI and when the SI is estimated using a frequency domain correlation approach. However, when the number of OFDM subcarriers is small and due to the clustering in ECM, the modified SLM produces a smaller PAPR reduction gain compared with conventional SLM.
KW - low computational complexity
KW - orthogonal frequency division multiplexing (OFDM)
KW - peak-to-average power ratio (PAPR)
KW - selective mapping (SLM)
KW - side information (SI) estimation
U2 - 10.1186/s13638-016-0596-2
DO - 10.1186/s13638-016-0596-2
M3 - Article
SP - 1
EP - 12
JO - EURASIP Journal on Wireless Communications and Networking
JF - EURASIP Journal on Wireless Communications and Networking
SN - 1687-1472
ER -