error modulation scheme
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A Bandwidth Efficient Modulation Scheme Using Quasi-Orthogonal Sequences
White Paper High bandwidth efficiency and quasi-orthogonality between the modulation symbols allows to increase the normalized data rate with little or no degradation in the required signal-to-noise ratio per bit to achieve a given... [11 Jul 2008]
ICI Cancellation Based Channel Estimation for OFDM Systems
White Paper Orthogonal Frequency Division Multiplexing OFDM), which is a multicarrier modulation scheme, splits high data rate information symbols into lower rate parallel data streams and transmits this parallel... [11 Apr 2008]
Effect of Slow Fading and Adaptive Modulation on TCP/UDP Performance of High-Speed Packet Wireless Networks
White Paper The solutions target upcoming mobile wireless systems such as IEEE 802.16e wireless MANs (Metropolitan Area Networks) where adaptive modulation is enabled and the underlying medium access scheme is... [06 Dec 2007]
Optimal Scheduling for OFDMA Systems
White Paper During each time-slot this involves selecting a subset of users for transmission, determining the assignment of available subcarriers to selected users, and for each subcarrier determining the transmission power and the coding and... [13 Apr 2007]
Adaptive Modulation and Coding (AMC) for Bit-Interleaved Coded OFDM (BIC-OFDM)
White Paper Adaptive Modulation and Coding (AMC) is receiving increasing attention as an effective method to enhance the performance of wireless systems. This paper provides a Pair-wise Error Probability (PEP)... [11 Apr 2007]
Adaptive OFDM Techniques With One-Bit-Per-Subcarrier Channel-State Feedback
White Paper Three adaptive approaches are considered to exploit such a CSI feedback: adaptive subcarrier selection; Adaptive Power Allocation (APA); and Adaptive Modulation Selection (AMS). Under the conditions of a constant raw... [11 Apr 2007]
An Analytical Model of Rate-Adaptive Wireless LAN and Its Simulative Verification
White Paper This is further complicated by rate adaptation, i.e.the dynamic adjustment of the modulation scheme to the characteristics of the wireless channel. The error prone nature of the wireless... [24 May 2006]
Long-Term Time-Share Guarantees Are Necessary for Wireless LANs
White Paper Transmitting at a lower data rate (by using a more resilient modulation scheme) increases the frame transmission time but reduces the bit error rate. Wireless Local Area Networks (WLANs)... [10 May 2006]
Multicarrier CDMA Systems Using PCC-OFDM
White Paper Polynomial cancellation coded orthogonal frequency division multiplexing (PCC-OFDM) with overlapping symbol periods is a modulation scheme with properties that make it well suited to high speed data... [21 Oct 2004]
Implementation Effects on GSM’s EDGE Modulation
White Paper The 8 3 / p -shifted 8-PSK modulation scheme is summarized and some potential simplifications are presented. GSM's new EDGE modulation promises to increase data rates by up to 3x and is... [25 Feb 2004]
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