Results 81 to 90 of about 5,755 (223)
Genetic-Algorithm-Assisted Multiuser Detection in Asynchronous CDMA Communications [PDF]
, 2004 —In an asynchronous direct-sequence code-division multiple-access, a specific bit of the reference user is interfered by two asynchronously arriving surrounding bits of all the other users supported by the system.
YEN, K., HANZO, L.
core
IET Radar, Sonar &Navigation, Volume 18, Issue 9, Page 1474-1480, September 2024.The spatial sensitivity of a machine‐learning‐based coding digital receiving array (ML‐CDRA) is studied which describes the spatial accumulation gain in different directions. It is demonstrated that spatial sensitivity is determined by the encoding network, decoding network, and beamforming criterion.
Lei Xiao, Yubing Han, Shurui Zhang
wiley +1 more source
International Journal of Antennas and Propagation, 2011 We analytically derive the upper bound for the bit error rate (BER) performance of a single user multiple input multiple output code division multiple access (MIMO-CDMA) system employing parity-bit-selected spreading in slowly varying, flat Rayleigh ...
Claude D'Amours, Adel Omar Dahmane
doaj +1 more source
Path Loss Model Optimization for Code Division Multiple Access (CDMA) System in Malaysia
Modern Applied Science, 2011 تهدف دراسة هذا العمل إلى تطوير نموذج محسّن لفقدان المسار للتغطية الحضرية في نظام الوصول المتعدد بتقسيم الشفرة (CDMA) بناءً على النماذج الحالية والقياسات التجريبية. يتم اختيار نموذج أوكومورا كمرجع لتطوير نموذج فقدان المسار الأمثل بناءً على أصغر خطأ نسبي متوسط مقارنة بفقدان المسار المقاس.
Mardeni Roslee, Yihpey Lee
openaire +1 more source
Burst-by-Burst Adaptive Multiuser Detection CDMA: A Framework for Existing and Future Wireless Standards [PDF]
, 2003 This paper provides a broad overview of the multiuser detection literature of the past few years in a nonmathematical, easily accessible approach. The treatment is then extended to the comparative study of channel-quality controlled burst-by-burst (BbB ...
Kuan, E.L., Hanzo, L.
core
Blind Joint Soft-Detection Assisted Slow Frequency-Hopping Multicarrier DS-CDMA [PDF]
, 2000 A novel multiple-access scheme based on slow frequency-hopping multicarrier direct-sequence, code-division multiple access (SFH/MC DS-CDMA) is proposed and investigated, which can be rendered compatible with the existing second-generation narrow-band ...
Lie-Liang Yang +3 more
core +1 more source
Theoretical Investigation into Spectral Coexistence of CDMA and TDMA Systems
The Journal of Engineering Research, 2008 The scarcity of available radio spectrum presently limits the extension of modern multimedia systems. This paper presents a theoretical investigation into the possibility of using a frequency overlay of a narrowband Code Division Multiple Access (CDMA ...
A.M. Abbosh, M. A. Shehathah
doaj +1 more source
Adaptive near minimum error rate training for neural networks with application to multiuser detection in CDMA communication systems [PDF]
, 2005 Adaptive training of neural networks is typically done using some stochastic gradient algorithm that tries to minimize the mean square error (MSE). For many applications, such as channel equalization and code-division multiple-access (CDMA) multiuser ...
Hanzo, L., Chen, S., Samingan, A.K.
core
Performance analysis of a 2-D time-wavelength OCDMA wavelength-aware receiver with beat noise [PDF]
, 2006 The effect of beat noise on two-dimensional time-wavelength optical code-division multiple-access systems utilising wavelength-aware receivers is examined. A derivation of a general formula for the bit error probability taking into consideration multiple
Taher Bazan +5 more
core +1 more source
Performance of Fractionally Spread Multicarrier CDMA in AWGN as Well as Slow and Fast Nakagami-m Fading Channels [PDF]
, 2005 —In multicarrier code-division multiple-access (MCCDMA), the total system bandwidth is divided into a number of subbands, where each subband may use direct-sequence (DS) spreading and each subband signal is transmitted using a subcarrier frequency.
Yang, L-L., Hanzo, L.
core