LT codes for OFDM multicast systems with PAPR reduction capability

Lee, Shih-Kai; Chiu, Hsin-Liang; Tsai, Yao-Chuan; Chen, Hsin‐Yi

doi:10.1145/1582379.1582456

Cited by 3 publications

(3 citation statements)

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“…Fountain coded PAPR reduction methods follow this idea and also realize the error correction. In [5] and [6], the author generates candidates through combining various input packets after determining a degree value. In addition, the rateless property allows us to produce encoded packets limitlessly, so [7] achieves PAPR control by discarding those packets whose PAPR exceeds the threshold.…”

Section: Packet Permutation Algorithmmentioning

confidence: 99%

“…The packet-based coding property exactly matches the N-dimensional multicarrier structure of OFDM systems, and consequently fountain codes are used to reduce the PAPR [5] [6] [7]. Such a combination can also benefit from cross layer designing, which shows advantages in information sharing among layers and network adaptability.…”

mentioning

confidence: 99%

“…During the encoding process of fountain codes, different generator matrices [5] and input packet combinations for a chosen degree value [6] can generate various candidates so that we can select the one with the smallest PAPR for transmission. In [7], the scheme deploys fountain codes to control PAPR by introducing a desired level.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Packet Permutation PAPR Reduction for OFDM Systems Based on Luby Transform Codes

Bi¹,

Ren²,

Xiang³

2018

JCC

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In this paper, we present a novel signal candidate generation method and propose a new joint coding and probability peak to average power ratio (PAPR) reduction scheme for a Luby transform (LT) coded orthogonal frequency division multiplexing (OFDM) system. When a few LT packets are mapped into an OFDM symbol, all subcarriers are automatically divided into several blocks. We permutate this packets and assign them different subcarrier blocks to generate different signal candidates instead of multiplying by many phase rotation vectors and using active constellation extension, and the transmitted symbol will be the one whose PAPR is the smallest. Also, we introduce one phase rotation vector to further reduce PAPR. Simulation results prove that our proposed scheme can obtain effective PAPR reduction performance. Since the permutation operation does not change the degree value of each packet, the new scheme can still maintain good decoding performance.

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Section: Packet Permutation Algorithmmentioning

confidence: 99%

mentioning

confidence: 99%