• Publications
  • Influence
Relay Precoding for Non-Regenerative MIMO Relay Systems with Partial CSI Feedback
TLDR
This work considers a relay precoding problem in a non-regenerative multiple-input multiple-output (MIMO) relay system, and proposes the maximum eigenmode relaying (MER) scheme, which allocates the relay transmit power only to the maximum Eigenmode.
Fast Convergent LMS Adaptive Receiver for MC-CDMA Systems with Space-Time Block Coding
TLDR
For multicarrier code-division multiple access (MC-CDMA) systems employing Alamouti's simple space-time block coding, a modified MSE cost function is presented and an improved least mean-square (LMS) adaptive receiver is proposed.
Blind adaptive constrained moe receiver for uplink MC-CDMA systems with real signaling in multi-cell environments
TLDR
Results of analysis and simulation show that the proposed blind adaptive algorithm converges faster and has a higher steadystate signal-to-interference and noise ratio (SINR) than those of conventional schemes.
LMS adaptive receiver for uplink space-time coded MC-CDMA systems
  • Bangwon Seo, J. Ahn
  • Computer Science
    The 12th International Conference on Advanced…
  • 7 February 2010
TLDR
The proposed LMS adaptive receiver for uplink multicarrier code-division multiple access (MC-CDMA) systems employing Alamouti's simple space-time block coding (STBC) has higher steady-state signal to interference and noise ratio (SINR) and shows slower convergence rate than the former.
Frequency offset estimation and multiuser detection for MC-CDMA systems
We propose a joint scheme for multicarrier code-division multiple access (MC-CDMA) systems; it jointly estimates the frequency offset for the desired user and eliminates multiuser interference (MUI).
Joint Optimization of User Set Selection and Transmit Power Allocation for Orthogonal Random Beamforming in Multiuser MIMO Systems
When the number of users is finite, the performance improvement of the orthogonal random beamforming (ORBF) scheme is limited in high signal-to-noise ratio regions. In this paper, to improve the
SINR Lower Bound Based Multiuser Detector for Uplink MC-CDMA Systems with Residual Frequency Offset
  • Bangwon Seo
  • Mathematics, Computer Science
    IEEE Communications Letters
  • 7 September 2012
TLDR
Simulation results show that the proposed scheme has better SINR and bit error rate (BER) performances in a high signal-to-noise ratio (SNR) region than a conventional minimum mean square error (MMSE) receiver that ignores the NRFO.
Joint design of precoder and receiver in cognitive radio networks using an MSE criterion
  • Bangwon Seo
  • Mathematics, Computer Science
    Signal Process.
  • 1 November 2011
TLDR
A suboptimal solution with low complexity is proposed in closed form for single-user multiple-input multiple output (MIMO) transmission from secondary base station (SBS) in cognitive radio network where there is one primary user to which spectrum is licensed.
Self-interference cancellation for two-way amplify-and-forward relaying systems
This study proposes implementation of two-way amplify-and-forward relaying systems in practical environments where signals from two source nodes arrive at a relay with different propagation delays.
Precoder design in cognitive radio networks with channel covariance information
  • Bangwon Seo
  • Engineering, Computer Science
    Signal Process.
  • 1 December 2012
TLDR
A communication scenario for cognitive radio networks where the channel state information between the secondary base station (SBS) and the PU is perfectly known at the SBS transmitter whereas only the covariance information is known for the channel of the S BS-secondary user (SU) link at theSBS transmitter is considered.
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