An investigation of peak-to-average power ratio in MC-CDMA combined with partial transmit sequence

Ruangsurat, N.; Rajatheva, R.M.A.P.

doi:10.1109/vetecs.2001.944946

Cited by 28 publications

(15 citation statements)

References 8 publications

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“…|S 0 (z)| 2 ≤ P k . By the definition of A k (z) in (2), it is clear that |A k (z)| 2 ≤ P k for each k. Then,…”

Section: A Papr Bounds Using Golay Complementary Sequences For Spreamentioning

confidence: 99%

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Peak power analysis of MC-CDMA employing Golay complementary sequences

Dong

2011

2011 12th Canadian Workshop on Information Theory

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Golay complementary sequences are a good solution to reduce the high peak-to-average power ratio (PAPR) of multicarrier communication systems. In this paper, we present a simple but novel technique to develop theoretical PAPR bounds of downlink MC-CDMA system using Golay complementary sequences for spreading and coding. The developed PAPR bounds are independent of the spreading factor in uncoded MC-CDMA. Furthermore, they have no dependency on the number of spreading processes as well as the spreading factor in coded MC-CDMA. Simulation results demonstrate that the theoretical bounds are well followed by 99.9% PAPRs which are also independent of spreading factors (for uncoded and coded cases), and the number of spreading processes (for coded case only). Practically, the independency gives us a useful insight for peak power control in MC-CDMA employing Golay complementary sequences.

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“…|S 0 (z)| 2 ≤ P k . By the definition of A k (z) in (2), it is clear that |A k (z)| 2 ≤ P k for each k. Then,…”

Section: A Papr Bounds Using Golay Complementary Sequences For Spreamentioning

confidence: 99%

“…A variety of techniques have been studied in MC-CDMA systems to solve this problem [2]- [9]. As an example, Golay complementary sequences [10] have attracted much attention due to their theoretically bounded PAPR in OFDM systems [11].…”

Section: Introductionmentioning

confidence: 99%

Peak power analysis of MC-CDMA employing Golay complementary sequences

Dong

2011

2011 12th Canadian Workshop on Information Theory

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“…All the previously mentioned methods have been originally proposed for single-user multicarrier schemes such as OFDM. Although most of them are also applicable with minor modifications to MC-CDMA systems (Ruangsurat & Rajatheva, 2001;Ohkubo & Ohtsuki, 2002), other families of algorithms can be developed after carefully considering the different www.intechopen.com Vehicular Technologies: Increasing Connectivity 206 structure of the generated MC-CDMA signals. Between these, probably the most popular are those based on dynamically selecting an "optimal" set of codes (those that give the lowest possible PAPR), according to the number of active user in the system (Ochiai & Imai, 1998;Kang et al, 2002;Alsusa & Yang, 2006).…”

Section: Introductionmentioning

confidence: 99%

Reduced-Complexity PAPR Minimization Schemes for MC-CDMA Systems

Otero¹,

Hernández²

2011

Vehicular Technologies: Increasing Connectivity

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“…Although these OFDM based schemes can be transplanted to MC-CDMA system [4][5], more efficient MC-CDMA specific algorithms have been developed by exploiting the spreading codes of the MC-CDMA systems. For instance, [6] proposed to assign two spreading codes for each user and use two chip-matched correlators to identify which spreading code has been used at the transmitter, and [7] provided a scheme for generating new spreading sequences with low PAPR.…”

Section: Introductionmentioning

confidence: 99%

Optimized Spreading Code Reallocation Technique for PAPR Reduction in MC-CDMA Systems

Yang¹,

Mingli²,

Li³

2009

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference

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Multicarrier code division multiple access (MC-CDMA) is one of the most promising techniques considered for future broadband mobile services. However, the high peak to average power ratio (PAPR) problem associated with multicarrier systems significantly degrades the power efficiency and makes it less preferred by the industry. In this paper, we exploit the order of the CDMA spreading codes as an extra degree of freedom to devise an efficient PAPR reduction scheme for the downlink of MC-CDMA systems. Both lightly loaded and fully loaded systems are considered when using the orthogonal sets of WalshHadamard and Golay complementary sequences. The proposed technique requires only slight modification to the MC-CDMA base station and negligible complexity to the mobile terminals. It will be demonstrated that it achieves significant PAPR reduction with low system complexity at both transmitter and receiver.

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An investigation of peak-to-average power ratio in MC-CDMA combined with partial transmit sequence

Cited by 28 publications

References 8 publications

Peak power analysis of MC-CDMA employing Golay complementary sequences

Peak power analysis of MC-CDMA employing Golay complementary sequences

Reduced-Complexity PAPR Minimization Schemes for MC-CDMA Systems

Optimized Spreading Code Reallocation Technique for PAPR Reduction in MC-CDMA Systems

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