Low‐complexity data decoding using binary phase detection in SLM‐OFDM systems

Adegbite, Saheed A.; McMeekin, Scott G.; Stewart, Brian G.

doi:10.1049/el.2013.4030

Cited by 13 publications

(14 citation statements)

References 5 publications

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“…In terms of data decoding performance, the proposed SI estimation procedure in this paper can offer improved performance particularly in the presence of a severe multipath fading channel condition, compared with the method studied in [14]. In terms of computational complexity, Step 1 requires -|⋅| 2 operations, CAs, and CMs, and Step 2, /2 integer compare operations and (( /2)−1) RAs.…”

Section: Proposed Methodsmentioning

confidence: 98%

“…The proposed scheme in this paper differs from the work studied in [14] in that it addresses the channel fading limitations stated in [14] through the use of a different SI estimation detection criterion. In the proposed scheme, the first stage uses a low complexity binary detection criterion while in the second stage, SI estimation is achieved through a decision rule that minimises the error between the detection results from the first stage and each of the possible SLM candidate phase rotation sequence vectors.…”

Section: Introduction O Rthogonal Frequency Division Multiplexing mentioning

confidence: 97%

“…To further reduce the computational complexity of SI estimation, this paper presents a pilot-assisted SI estimation method based on an extension of the work carried out in [14], and is based on a slightly modified SLM approach, which enables the use of a two-stage SI estimation procedure at the receiver, to improve data decoding performance. The proposed scheme in this paper differs from the work studied in [14] in that it addresses the channel fading limitations stated in [14] through the use of a different SI estimation detection criterion.…”

Section: Introduction O Rthogonal Frequency Division Multiplexing mentioning

confidence: 99%

See 2 more Smart Citations

A 2-stage SI estimation scheme for SLM-OFDM systems without SI transmission

Adegbite

McMeekin

Stewart

2015

2015 Wireless Telecommunications Symposium (WTS)

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This paper addresses the issue of high computational complexity associated with side information (SI) estimation in orthogonal frequency division multiplexing (OFDM) systems that implement selected mapping (SLM) to reduce peak-toaverage power ratio (PAPR). The proposed method is based on a slightly modified SLM approach that enables the use of a low complexity binary detection criterion for SI estimation, without the need for SI transmission. Simulations show that the combined PAPR reduction and BER performance of the proposed method is similar to both pilot-assisted Maximum-Likelihood (PAML) SI estimation scheme and standard SLM that presumes perfect knowledge of SI. In addition, relative to the PAML scheme, the proposed method offers significantly reduced computational complexity.

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Section: Proposed Methodsmentioning

confidence: 98%

Section: Introduction O Rthogonal Frequency Division Multiplexing mentioning

confidence: 97%

Section: Introduction O Rthogonal Frequency Division Multiplexing mentioning

confidence: 99%

See 1 more Smart Citation

A 2-stage SI estimation scheme for SLM-OFDM systems without SI transmission

Adegbite

McMeekin

Stewart

2015

2015 Wireless Telecommunications Symposium (WTS)

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“…From the expression in (7), it can be noted that in order to achieve successful data recovery, the value of Bū[k] or its u-indexū must be correctly known or determined at the receiver [21].…”

Section: Slmmentioning

confidence: 99%

A joint OFDM PAPR reduction and data decoding scheme with no SI estimation

Adegbite

McMeekin

Stewart

2016

J Wireless Com Network

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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.

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“…To meet mobile subscriber and internet user demands for highspeed data, wireless telecommunication bodies have proposed some high speed wireless communication standards including the 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) standard for 4G communication systems, and IEEE 802.11 a/g within wireless local area networks (WLANs) for Wi-Fi. In these wireless systems, orthogonal frequency division multiplexing (OFDM) is the adopted physical layer technology because it is spectrally efficient, and offers some immunity to multipath fading [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

A selective control information detection scheme for OFDM receivers

2016

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In wireless communications, both control information and payload (user-data) are concurrently transmitted and required to be successfully recovered. This paper focuses on block-level detection, which is applicable for detecting transmitted control information, particularly when this information is selected or chosen from a finite set of information that are known at both transmitting and receiving devices. Using an orthogonal frequency division multiplexing architecture, this paper investigates and evaluates the performance of a time-domain decision criterion in comparison with a form of Maximum Likelihood (ML) estimation method. Unlike the ML method, the proposed time-domain detection technique requires no channel estimation as it uses the correlation (in the time-domain) that exists between the received and the transmitted selective information as a means of detection. In comparison with the ML method, results show that the proposed method offers improved detection performance, particularly when the control information consists of at least 16. However, the implementation of the proposed method requires a slightly increased number of mathematical computations.

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Low‐complexity data decoding using binary phase detection in SLM‐OFDM systems

Cited by 13 publications

References 5 publications

A 2-stage SI estimation scheme for SLM-OFDM systems without SI transmission

A 2-stage SI estimation scheme for SLM-OFDM systems without SI transmission

A joint OFDM PAPR reduction and data decoding scheme with no SI estimation

A selective control information detection scheme for OFDM receivers

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