Efficient LLR Calculation for Non-Binary Modulations over Fading Channels
نویسندگان
چکیده
منابع مشابه
Resource-Efficient Fusion over Fading and Non-Fading Reporting Channels for Cooperative Spectrum Sensing
Recently, a novel resource-efficient technique for the reporting channel transmissions in cooperative spectrum sensing was proposed. In this technique, secondary users are allowed to simultaneously send their local decisions to the fusion center, saving time and frequency resources. Expressions for the probabilities of detection and false alarm for the unitary-gain AWGN reporting channels were ...
متن کاملBit Error Performance for Asynchronous Ds Cdma Systems Over Multipath Rayleigh Fading Channels (RESEARCH NOTE)
In recent years, there has been considerable interest in the use of CDMA in mobile communications. Bit error rate is one of the most important parameters in the evaluation of CDMA systems. In this paper, we develop a technique to find an accurate approximation to the probability of bit error for asynchronous direct–sequence code division multiple–access (DS/CDMA) systems by modeling the multipl...
متن کاملApplication of Nonbinary LDPC Codes for Communication over Fading Channels Using Higher Order Modulations
In this paper, we investigate the application of nonbinary low density parity check (LDPC) codes over Galois field GF(q) for both single-input single-output (SISO) and multipleinput multiple-output (MIMO) fading channels using higher order modulations. As opposed to the widely studied binary systems that employ joint detection and channel decoding, we propose a nonbinary system where optimal si...
متن کاملPerformance of Dual MRC Receiver for M-ary Coherent and Non-coherent Modulations over Hoyt Fading Channels with Non-identical Fading Parameter
Performance of a dual maximal ratio combining receiver has been analyzed for M-ary coherent and noncoherent modulations over independent Hoyt fading channels with non-identical fading parameter using classical probability density function (PDF) based approach. Analytical expressions for the PDF of the receiver output signal-to-noise ratio (SNR) have been presented. Expressions of outage and ave...
متن کاملOver Optical Fading Channels
Title of dissertation: RELIABLE COMMUNICATION OVER OPTICAL FADING CHANNELS Kaushik Chakraborty, Doctor of Philosophy, 2005 Dissertation directed by: Professor Prakash Narayan Department of Electrical and Computer Engineering and Institute for Systems Research In free space optical communication links, atmospheric turbulence causes random fluctuations in the refractive index of air at optical wa...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Communications
سال: 2011
ISSN: 0090-6778
DOI: 10.1109/tcomm.2011.022811.090261