Cubic interpolation based channel estimator for rectangular M-QAM
نویسندگان
چکیده
منابع مشابه
Exact BER of rectangular-constellation QAM subjected to asynchronous co-channel interference and Nakagami-m fading
Introduction: Conventionally, the rectangular QAM (R-QAM) BER has been estimated by using various approximations or bounds. Most exact QAM BER results are obtained without taking into account the co-channel interference (CCI) [1, 2]. When CCI is considered, exact BER analyses procedures are performed only for BPSK [3–5] and QPSK [4, 5] systems. Hence, the contribution of this Letter is that we ...
متن کاملConstrained Interpolation via Cubic Hermite Splines
Introduction In industrial designing and manufacturing, it is often required to generate a smooth function approximating a given set of data which preserves certain shape properties of the data such as positivity, monotonicity, or convexity, that is, a smooth shape preserving approximation. It is assumed here that the data is sufficiently accurate to warrant interpolation, rather than least ...
متن کاملAn Improved Channel Estimation Algorithm Based on Cubic Convolution Interpolation for LOWPM System
Lifting scheme based orthogonal wavelet packet multiplexing (LOWPM) system can increase the computation efficiency and save storage space. By using the orthogonality of the translational wavelet functions, LOWPM system efficiently avoids inter-symbol interference (ISI) and inter-channel interference (ICI). Compared with the orthogonal frequency division multiplexing (OFDM) system, LOWPM system ...
متن کاملPolynomial based Channel Estimation Technique with Sliding Window for M-QAM Systems
Pilot Symbol Assisted Modulation (PSAM) channel estimation techniques over Rayleigh fading channels have been analysed in recent years. Fluctuations in the Rayleigh fading channel gain degrades the performance of any modulation scheme. This paper develops and analyses a PSAM Polynomial interpolation technique based on Least Square (LS ) approximations to estimate the Channel State Information (...
متن کاملExact Closed-form Sep for Arbitrary Rectangular M-qam Transmission over Flat Rayleigh Fading Channels
By using an approach other than usual, we derive an exact closed-form expression for the symbol error probability (SEP) for arbitrary rectangular M-QAM signaling over flat Rayleigh fading channels. This has never been achieved before as the best-known SER for QAM up to date is only the results obtained for the square M-QAM. Our rectangular M-QAM result can be readily extended to find the result...
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: Nigerian Journal of Technology
سال: 2018
ISSN: 2467-8821,0331-8443
DOI: 10.4314/njt.v37i2.20