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Sungmook Lim, Gosan Noh, Jihaeng Heo, Hyungjong Kim and Daesik Hong,"OFDMA with Variable Tone Spaces", IEEE Wireless Comm. Magazine, Dec. 2012

[IEEE Wireless Commun. Mag.]
조회 39675
Status : Published 
Date : 2012-12 
Title : OFDMA with Variable Tone Spaces 
Authors : Sungmook Lim, Gosan Noh, Jihaeng Heo, Hyungjong Kim and Daesik Hong 
Journal : IEEE Wireless Comm. Magazine 
Abstract : Next generation wireless networks such as 3GPP long term evolution - advanced (LTE-A) demand enhanced system capacity for high quality multimedia services. Carrier aggregation (CA) based on orthogonal frequency division multiple access (OFDMA) has been introduced to achieve this. In CA, each component carrier can be located on a different frequency band and each user utilizing it moves at a different speed. This results in different channel characteristics for each user. Enhancing the system capacity in this environment requires a multiple access scheme that considers different channel characteristics among users. However, conventional OFDMA using fixed tone space (called OFDMAFTS)does not consider user-specific channel characteristics, resulting in capacity degradation.
In this article, we propose a new OFDMA system with variable tone spaces (OFDMA-VTS) as an approach to enhancing the system capacity. OFDMA-VTS selects the tone space suitable for each user by considering user-specific channel characteristics in CA. When inter-symbol interference (ISI) is dominant due to a long delay spread, the small tone space is selected to eliminate severe ISI. Conversely, when inter-carrier interference (ICI) due to a large Doppler spread severely degrades the system performance, the large tone space is selected to compensate ICI. In the proposed OFDMA-VTS, each user adaptively selects the optimal tone space needed to minimize the total interference of ISI and ICI, therefore enhancing the system capacity. 
URL : http://ieeexplore.ieee.org/xpl/articleDe...er=6393526 
Download : http://mirinae.yonsei.ac.kr/?module=file...ff5b9ba7bb 

Lim, S.; Noh, G.; Heo, J.; Kim, H.; Hong, D.; , "OFDMA with variable tone spaces," Wireless Communications, IEEE , vol.19, no.6, pp.113-120, December 2012
doi: 10.1109/MWC.2012.6393526
keywords: {Bandwidth;Bit error rate;Delay;Doppler effect;OFDM;Synchronization;Transmitters;}
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6393526&isnumber=6393507

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Attachment
List of Articles
No.
Status Datesort
39 [IEEE Trans. Wireless Commun.] Hyejin Kim, Yosub Park, Jintae Kim and Daesik Hong, "A Low-Complex SVD-Based F-OFDM," in IEEE Transactions on Wireless Communications, Feb. 2020 Published  2019-10 
38 [IEEE Trans. Wireless Commun.] Jaeyoung Choi, Beomju Kim, Kwonjong Lee, and Daesik Hong, "A Transceiver Design for Spectrum Sharing in Mixed Numerology Environments", IEEE Trans. on Wireless Comm., Mar. 2019 Published  2019-03 
37 [IEEE Wireless Commun. Lett.] Hyejin Kim, Insik Jung, Yosub Park, Wonsuk Chung, Sooyong Choi, and Daesik Hong, "Time Spread-Windowed OFDM for Spectral Efficiency Improvement", IEEE Wireless Comm. Letters, Feb. 2018 Published  2018-02 
36 [IEEE Trans. Wireless Commun.] Sungmook Lim, Gosan Noh, Hyungjong Kim, and Daesik Hong, "Optimal Tone Space Selection Scheme for OFDMA-VTS in Carrier Aggregation," IEEE Trans. Wireless Commun., Nov. 2013 file Published  2013-11 
» [IEEE Wireless Commun. Mag.] Sungmook Lim, Gosan Noh, Jihaeng Heo, Hyungjong Kim and Daesik Hong,"OFDMA with Variable Tone Spaces", IEEE Wireless Comm. Magazine, Dec. 2012 file Published  2012-12 
34 [IEEE Trans. Veh. Technol.] Seongwoo Ahn, Hano Wang, and Daesik Hong , "Throughput–Delay Tradeoff of Proportional Fair Scheduling in OFDMA Systems" IEEE Trans. Veh. Technol., Nov. 2011 file Published  2011-11 
33 [IEEE Trans. Wireless Commun.] Kyungchul Kwak, Sungeun Lee, Hyunkee Min, Sooyong Choi, and Daesik Hong, "New OFDM Channel Estimation with Dual-ICI Cancellation in Highly Mobile Channel," IEEE Trans. Wireless Commun., Oct. 2010 file Published  2010-10 
32 [IEEE Trans. Veh. Technol.] Kyungchul Kwak, Sungeun Lee, and Daesik Hong, "The Role of Phase Compensation in Preventing Channel Dispersion in Variable Gain Relay OFDM Systems," IEEE Trans. Veh. Technol., Feb 2010 file Published  2010-02 
31 [IEEE Trans. Commun.] Myounghee Park, Kyunbyoung Ko, Byungjoon Park, and Daesik Hong, "Effects of asynchronous MAI on average SEP performance of OFDMA uplink systems over frequency-selective Rayleigh fading channels," IEEE Trans. Commun., Feb 2010 Published  2010-02 
30 [IEEE Trans. Wireless Commun.] Jemin Lee, Hano Wang and Daesik Hong, "QoS-guaranteed Transmission Mode Selection for Efficient Resource Utilization in Multi-hop Cellular Networks", IEEE Trans. Wireless Comm., Oct 2008 file Published  2008-10 
29 [IEEE Trans. Veh. Technol.] Choongchae Woo, Eunsung Oh, Seungyoup Han and Daesik Hong, "Simple Dynamic Subcarrier Allocation with CQI Feedback Reduction for OFDMA Systems", IEEE Trans. Veh. Technol., Sep 2008 Published  2008-09 
28 [IEEE Trans. Veh. Technol.] Eunsung Oh, Myeongyun Cho, Seungyoup Han, Choongchae Woo and Daesik Hong, "Performance Analysis of Reuse Partitioning-Based Subchannelized OFDMA Uplink Systems", IEEE Trans. Veh. Technol., Jul 2008 Published  2008-07 
27 [IEEE Trans. Wireless Commun.] Woohyun Seo, Myeongyon Cho and Daesik Hong, "A New Full-band Feedback Scheme Using the Adaptive Grouping Method in OFDMA Systems", IEEE Trans. Wireless Comm., Jun 2008 file Published  2008-06 
26 [IEEE Trans. Wireless Commun.] Kyungchul Kwak, Sungeun Lee, Jihyung Kim, Daesik Hong, "A New DFT-Based Channel Estimation Approach for OFDM with Virtual Subcarriers by Leakage Estimation", IEEE Trans. Wireless Comm., Jun 2008 file Published  2008-06 
25 [IEEE Trans. Consum. Electron.] Sungkeun Cha, Myonghee Park, Sungeun Lee, Keukjoon Bang and Daesik Hong, "A New PAPR Reduction Technique for OFDM Systems Using Advanced Peak Windowing Method", IEEE Trans. Consumer Elec., May 2008 Published  2008-05 
24 [IEEE Trans. Veh. Technol.] Myeongsu Han, Takki Yu, Jihyung Kim, Kyungchul Kwak, Sungeun Lee, Seungyoup Han and Daesik Hong, "OFDM Channel Estimation with Jammed Pilot Detector under Narrow-Band Jamming", IEEE Trans. Veh. Technol., May 2008 file Published  2008-05 
23 [IEICE Trans. Commun.] Jihyung Kim, Sangho Nam, Donjun Lee, Jonghan Kim, Jongdae Park, Daesik Hong, "Channel Estimation with a New Preamble Structure for a MIMO OFDM-based WLAN System", IEICE Trans. Commun., Feb. 2008 Published  2008-02 
22 [IEEE Trans. Veh. Technol.] Hyungjoon Song, Jihyung Kim and Daesik Hong, "Joint Doppler-Frequency Diversity for OFDM Systems Using Hybrid Interference Cancellation", IEEE Trans. Veh. Technol., Jan 2008 Published  2008-01 
21 [IEEE Trans. Wireless Commun.] Sungeun Lee, Kyungchul Kwak, Jihyung Kim and Daesik Hong, "Channel estimation approach with variable pilot density to mitigate interference over time-selective cellular OFDM systems" IEEE Trans. Wireless Comm., Dec 2007 file Published  2007-12 
20 [IEEE Trans. Veh. Technol.] Junghoon Lee, Sungeun Lee, Keukjoon Bang, Sungkeun Cha and Daesik Hong, "Carrier Frequency Offset Estimation Using ESPRIT for Interleaved OFDMA Uplink Systems", IEEE Trans. Veh. Technol., Sep 2007 Published  2007-09 
19 [Other Journals] Myeongsu Han, Sungeun Lee, Sangmin Ro, Junghyun Kim, Takki Yu, Seungyoup Han and Daesik Hong, "Cooperative Diversity Performance for OFDM Transmission over Partially Jammed Channels", Int'l Journal of Elec. and Comm., July 2007 Published  2007-07 
18 [IEEE Trans. Veh. Technol.] Eunseok Ko and Daesik Hong, "A Robust STBC-Based Transmit Diversity Scheme for OFDM Systems Over Spatially Transmit Correlated Fading Channels", IEEE Trans. Veh. Technol., Mar 2007 Published  2007-03 
17 [IEEE Trans. Wireless Commun.] Myeongyun. Cho, Woohyun Seo and Daesik Hong, "A joint feedback reduction scheme using delta modulation for dynamic channel allocation in OFDMA systems", IEEE Trans. Wireless Comm., Jan 2007 Published  2007-01 
16 [IEICE Trans. Commun.] Jihyung Kim and Daesik Hong, "Channel Estimation in Comb-Type Pilot Arrangements for OFDM Systems with Null Subcarriers", IEICE Trans. Comm., Dec 2006 Published  2006-12 
15 [IEEE Trans. Wireless Commun.] Jeongho Park, Jihyung Kim, Myonghee Park, Kyunbyoung Ko, Changeon Kang and Daesik Hong, "Performance analysis of channel estimation for OFDM systems with residual timing offset", IEEE Trans. WComm., Jul 2006 Published  2006-07 
14 [IEICE Trans. Commun.] Myeongyun Cho, Hangyu Cho and Daesik Hong, "A Novel 2-Dimensional Spreading Method for Down-Link OFDM Code-Division Multiplexing Systems", IEICE Trans. Comm., Jun 2006 Published  2006-06 
13 [IEICE Trans. Fund.] Eunsung Oh, Myeongyun Cho, Seungyoup Han, Choongchae Woo and Daesik Hong, "Performance Analysis of Dynamic Channel Allocation based on Reuse Partitioning", IEICE Trans. Fundamentals, Jun 2006 Published  2006-06 
12 [IEICE Trans. Commun.] Younghyun Jeon, Jongkyung Kim, Hyunkyu Yu, Jonghyung Kwun, Sanghoon Lee, Jongsoo Seo, and Daesik Hong, "Known-postfix based Cell Search Technique for OFDM Cellular Systems", IEICE Trans. Comm., Apr 2006 Published  2006-04 
11 [IEEE Signal Process. Lett.] Jihyung Kim, Jeongho Park and Daesik Hong, "Performance analysis of channel estimation in OFDM systems", IEEE SP Letters, Jan 2005 file Published  2005-01 
10 [Electron. Lett.] Jeongho Park, Changeon Kang and Daesik Hong, "Effect of Bluetooth interference on OFDM systems", Electronics Letters, Nov 2004 file Published  2004-11 
9 [IEICE Trans. Commun.] Intae Hwang, Jungyoung Son, Sukki Hahn, Younghwan You, Daesik Hong and Changeon Kang, "Inter-Channel Interference Analysis in STBC OFDM-CDMA Systems", IEICE Trans. Comm., May 2004 Published  2004-05 
8 [IEEE Signal Process. Lett.] Byungjoon Park, Hyunsoo Cheon, Eunseok Ko, Changeon Kang and Daesik Hong, "A blind OFDM synchronization algorithm based on cyclic correlation", IEEE SP Letters, Feb 2004 Published  2004-02 
7 [IEEE Commun. Lett.] Hwasun Yoo and Daesik Hong, "Edge sidelobe suppressor scheme for OFDMA uplink systems", IEEE Comm. Letters, Nov 2003 Published  2003-11 
6 [IEEE Commun. Lett.] Myonghee Park, Kyunbyoung Ko, Hwasun Yoo and Daesik Hong, "Performance analysis of OFDMA uplink systems with symbol timing misalignment", IEEE Comm. Letters, Aug 2003 file Published  2003-08 
5 [IEEE Commun. Lett.] Byungjoon Park, Hyunsoo Cheon, Changeon Kang and Daesik Hong, "A novel timing estimation method for OFDM systems", IEEE Comm. Letters, May 2003 Published  2003-05 
4 [Electron. Lett.] Hyunsoo Cheon and Daesik Hong, "Effect of imperfect channel information in OFDM-based WLAN", Electronics Letters, Aug 2002 Published  2002-08 
3 [IEEE Commun. Lett.] Hyunsoo Cheon and Daesik Hong, "Effect of Channel Estimation Error in OFDM-Based WLAN", IEEE Comm. Letters, May 2002 Published  2002-05 
2 [IEEE Trans. Commun.] Keukjoon Bang, Namshin Cho, Jaehee Cho, Heeyoung Jun, Kwangchul Kim, Hyuncheol Park and Daesik Hong, "A Coarse Frequency Offset Estimation in an OFDM System Using the Concept of the Coherence Phase Bandwidth", IEEE Trans. Comm., Aug 2001 Published  2001-08 
1 [IEEE Trans. Broadcast.] Jaehee Cho, Namshin Cho, Keukjoon Bang, Myunghee Park, Heeyoung Jun, Hyuncheol Park and Daesik Hong, "PC-Based Receiver for Eureka-147 Digital Audio Broadcasting", IEEE Trans. Broadcasting, Jun 2001 Published  2001-06 
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