Power Backoff Reduction Techniques for Generalized Multicarrier Waveforms

Amplification of generalized multicarrier (GMC) signals by high-power amplifiers (HPAs) before transmission can result in undesirable out-of-band spectral components, necessitating power backoff, and low HPA efficiency. We evaluate variations of several peak-to-average power ratio (PAPR) reduction and HPA linearization techniques which were previously proposed for OFDM signals. Our main emphasis is on their applicability to the more general class of GMC signals, including serial modulation and DFT-precoded OFDM. Required power backoff is shown to depend on the type of signal transmitted, the specific HPA nonlinearity characteristic, and the spectrum mask which is imposed to limit adjacent channel interference. PAPR reduction and HPA linearization techniques are shown to be very effective when combined.

[1]  Krzysztof Wesolowski,et al.  Efficient algorithm for adjustment of adaptive predistorter in OFDM transmitter , 2000, Vehicular Technology Conference Fall 2000. IEEE VTS Fall VTC2000. 52nd Vehicular Technology Conference (Cat. No.00CH37152).

[2]  Hideki Ochiai.  Power efficiency comparison of OFDM and single-carrier signals , 2002, Proceedings IEEE 56th Vehicular Technology Conference.

[3]  T. Wilkinson,et al.  Block coding scheme for reduction of peak to mean envelope power ratio of multicarrier transmission schemes , 1994 .

[4]  Serdar Sezginer,et al.  OFDM peak power reduction with simple amplitude predistortion , 2006, IEEE Communications Letters.

[5]  Jean Armstrong,et al.  Peak-to-average power reduction for OFDM by repeated clipping and frequency domain filtering , 2002 .

[6]  David D. Falconer,et al.  PAPR Reduction using Frequency Domain Multiplexed Pilot Sequences , 2007, 2007 IEEE Wireless Communications and Networking Conference.

[7]  Klaus David.  Technologies for the Wireless Future , 2008 .

[8]  Georgios B. Giannakis,et al.  Wireless multicarrier communications , 2000, IEEE Signal Process. Mag..

[9]  L. Van der Perre,et al.  Impact of front-end non-idealities on bit error rate performance of WLAN-OFDM transceivers , 2000, RAWCON 2000. 2000 IEEE Radio and Wireless Conference (Cat. No.00EX404).

[10]  Hermann Rohling,et al.  Reducing out-of-band emissions due to nonlinearities in OFDM systems , 1999, 1999 IEEE 49th Vehicular Technology Conference (Cat. No.99CH36363).

[11]  C. Rapp,et al.  Effects of HPA-Nonlinearity on a 4-DPSK/OFDM-Signal for a Digital Sound Broadcasting System. , 1991 .

[12]  Robert L. Frank,et al.  Polyphase codes with good nonperiodic correlation properties , 1963, IEEE Trans. Inf. Theory.

[13]  A. Klein,et al.  B-IFDMA - A Power Efficient Multiple Access Scheme for Non-frequency-adaptive Transmission , 2007, 2007 16th IST Mobile and Wireless Communications Summit.

[14]  David C. Chu,et al.  Polyphase codes with good periodic correlation properties (Corresp.) , 1972, IEEE Trans. Inf. Theory.

[15]  Qiang Wu,et al.  Spectrum design of RF power amplifier for wireless communication systems , 2002, IEEE Trans. Consumer Electron..

[16]  José Manuel Páez-Borrallo,et al.  Peak power reduction for OFDM systems with orthogonal pilot sequences , 2006, IEEE Transactions on Wireless Communications.

[17]  Gunther Auer,et al.  Design of Time and Frequency Domain Pilots for Generalized Multicarrier Systems , 2007, 2007 IEEE International Conference on Communications.

[18]  Johannes B. Huber,et al.  A novel peak power reduction scheme for OFDM , 1997, Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97.

[19]  Nelson Sollenberger,et al.  Peak-to-average power ratio reduction of an OFDM signal using partial transmit sequences , 2000, IEEE Communications Letters.

[20]  Krzysztof Wesolowski.  A novel fast HPA predistorter for high PAPR signals , 2005, 2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications.

[21]  Rui Dinis,et al.  A class of nonlinear signal-processing schemes for bandwidth-efficient OFDM transmission with low envelope fluctuation , 2004, IEEE Transactions on Communications.

[22]  Krzysztof Wesołowski,et al.  On the PAPR Minimization Using Selected Mapping Algorithm in Pilot-Assisted OFDM Systems , 2007 .

[23]  G. Karam,et al.  GENERALIZED DATA PREDISTORTION USING INTERSYMBOL INTERPOLATION , 1991 .

[24]  Maryam Sabbaghian,et al.  A multiple access scheme for the uplink of broadband wireless systems , 2004, IEEE Global Telecommunications Conference, 2004. GLOBECOM '04..

[25]  Maryam Sabbaghian,et al.  Peak to Average Power Ratio Properties of MC-CDMA and SM-CDMA , 2006, 2006 IEEE 63rd Vehicular Technology Conference.

[26]  T. Wilkinson,et al.  Combined coding for error control and increased robustness to system nonlinearities in OFDM , 1996, Proceedings of Vehicular Technology Conference - VTC.

[27]  Stephan Pfletschinger,et al.  EU FP6 IST-2003-507581 WINNER, D2.4 Assessment of adaptive transmission technologies, Feb 2005 , 2005 .

[28]  M. Sabbaghian,et al.  Reducing required power back-off of nonlinear amplifiers in serial modulation using SLM method , 2005, VTC-2005-Fall. 2005 IEEE 62nd Vehicular Technology Conference, 2005..

[29]  Dennis R. Morgan,et al.  A robust digital baseband predistorter constructed using memory polynomials , 2004, IEEE Transactions on Communications.

[30]  Janusz Pochmara.  Improving compensation of nonlinear distortions in OFDM system using recurrent neural network with conjugate gradient algorithm , 2004, 2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754).

[31]  Rui Dinis,et al.  Channel Estimation for SC-FDE Systems Using Frequency Domain Multiplexed Pilots , 2006, IEEE Vehicular Technology Conference.

[32]  Seung Hee Han,et al.  An overview of peak-to-average power ratio reduction techniques for multicarrier transmission , 2005, IEEE Wireless Communications.