Proceedings ArticleDOI
Generalized OFDM for bridging between OFDM and single-carrier transmission
Haris Gacanin,Shinsuke Takaoka,Fumiyuki Adachi +2 more
- pp 145-149
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TLDR
In this article, a generalized OFDM (GOFDM) with frequency domain equalization (FDE) is proposed to alleviate the peak-to-average power ratio (PAPR) problem of OFDM.Abstract:
One of the main problems of orthogonal frequency division multiplexing (OFDM) is high peak-to-average power ratio (PAPR). In this paper, a novel approach to alleviate the PAPR problem of OFDM is presented. A generalized OFDM (GOFDM) with frequency-domain equalization (FDE) is proposed. Various FDE techniques based on zero forcing (ZF), maximum ratio combining (MRC) and minimum mean square error (MMSE) are considered. The bit error rate (BER) performance of GOFDM in a frequency-selective fading channel is evaluated by computer simulation and compared with those of conventional OFDM and single-carrier (SC) transmissionread more
Citations
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Journal ArticleDOI
Bit Error Rate Analysis of OFDM/TDM with Frequency-Domain Equalization
TL;DR: The theoretical bit error rate (BER) analysis of the OFDM/TDM in a frequency-selective fading channel is presented and the conditional BER expression is derived, based on a Gaussian approximation of the inter-symbol interference (ISI) arising from channel frequency- selectivity, for the given set of channel gains.
Proceedings ArticleDOI
Bit error rate analysis of OFDM/TDM with frequency-domain equalization
TL;DR: The theoretical BER analysis of the OFDM/TDM in a frequency-selective fading channel is presented and a conditional BER expression is derived, based on the Gaussian approximation of the residual inter-symbol interference (ISI) after FDE, for the given set of channel gains.
Proceedings ArticleDOI
Pilot-assisted channel estimation for OFDM/TDM with frequency-domain equalization
TL;DR: A pilot-assisted channel estimation scheme suitable for OFDM/TDM with MMSE-FDE is presented and the achievable BER performance is evaluated by computer simulation.
Proceedings ArticleDOI
Impact of imperfect channel estimation on OFDM/TDM performance
TL;DR: It is shown by numerical evaluation that the channel estimation error degrades the BER performance more when OFDM/TDM approaches SC, and the impact of imperfect channel estimation on the average bit error rate (BER) performance of OFDM-TDM is investigated.
Proceedings ArticleDOI
Initial FPGA design for generalized Orthogonal Nonsinusoidal Division Multiplexing
Peteris Misans,Gatis Valters +1 more
TL;DR: Preliminary results show that GONDM is a promising modulation technique for the building of adaptive data transmission systems.
References
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Book
OFDM for Wireless Multimedia Communications
Richard van Nee,Ramjee Prasad +1 more
TL;DR: In this paper, the authors present a comprehensive introduction to OFDM for wireless broadband multimedia communications and provide design guidelines to maximize the benefits of this important new technology, including modulation and coding, synchronization, and channel estimation.
Journal ArticleDOI
Frequency domain equalization for single-carrier broadband wireless systems
TL;DR: This article surveys frequency domain equalization (FDE) applied to single-carrier (SC) modulation solutions and discusses similarities and differences of SC and OFDM systems and coexistence possibilities, and presents examples of SC-FDE performance capabilities.
Journal ArticleDOI
Overview of multicarrier CDMA
Shinsuke Hara,Ramjee Prasad +1 more
TL;DR: The authors present an overview of new multiple access schemes based on a combination of code division and multicarrier techniques, such as multicarrier code-division multiple access (MC-CDMA), multicarriers direct sequence CDMA, and multitone CDMA.
Journal ArticleDOI
Effects of clipping and filtering on the performance of OFDM
Xiaodong Li,Leonard J. Cimini +1 more
TL;DR: This work investigates, through extensive computer simulations, the effects of clipping and filtering on the performance of OFDM, including the power spectral density, the crest factor, and the bit-error rate.