2 00 5 Geometrical relations between space time block code designs and complexity reduction ∗
نویسنده
چکیده
In this work, the natural geometric relation between the space time block code design for the unknown channel at the receiver and its counterpart design for the known channel at the receiver is exploited, to establish an estimate on the corresponding diversities. This leads to a decomposition result and splits the code design problem into two complexity reduced sub tasks. Moreover a geometrical criterion for high performance code design is derived.
منابع مشابه
Geometrical relations between space time block code designs and complexity reduction
In this work, the geometric relation between space time block code design for the coherent channel and its noncoherent counterpart is exploited to get an analogue of the information theoretic inequality I(X;S) I((X;H);S) in terms of diversity. It provides a lower bound on the performance of non-coherent codes when used in coherent scenarios. This leads in turn to a code design decomposition res...
متن کاملSelective Tone Reservation method for PAPR reduction in SFBC-OFDM systems
The high Peak to Average Power Ratio (PAPR) of Orthogonal Frequency Division Multiplexing (OFDM) and MIMO-OFDM systems reduces the system efficiency. In this paper, an extension of Tone Reservation (TR) method is introduced for PAPR reduction in Space Frequency Block Coded OFDM (SFBC-OFDM) systems. The proposed algorithm is based on a time domain kernel which is added to the signal of the anten...
متن کاملرفع نوفه ویدئو توسط تبدیل قیچک قطعهای
Parabolic scaling and anisotropic dilation form the core of famous multi-resolution transformations such as curvelet and shearlet, which are widely used in signal processing applications like denoising. These non-adaptive geometrical wavelets are commonly used to extract structures and geometrical features of multi-dimensional signals and preserve them in noise removal treatments. In discrete s...
متن کاملUnitary Differential Space-Time Modulation with Joint Modulation
We develop two new designs of unitary differential space-time modulation (DSTM) with low decoding complexity. Their decoder can be separated into a few parallel decoders, each of which has a decoding search space of less than N if the DSTM codebook contains N codewords. Both designs are based on the concept of joint modulation, which means that several information symbols are jointly modulated,...
متن کاملHigher Code Rate and Full Diversity Space Time Block Code Based on Partial Interference Cancellation Group
In this paper a new systematic PIC-STBC (Partial Interference Cancellation Space Time Block Code) design is proposed for MIMO (Multi-input Multi-output) systems for any transmit antennas. The proposed code uses PIC decoding scheme to decode transmitted symbols at the receiver. The Proposed PIC group STBC design which achieves full diversity and has higher code rate compared with the best known ...
متن کامل