Improved channel estimation schemes for DS CDMA RAKE receive

Improved channel estimation schemes for DS CDMA RAKE receiver with the use of multiuser interference canceller

... IMPROVED CHANNEL ESTIMATION SCHEMES FOR DS- CDMA RAKE RECEIVER WITH THE USE OF MULTIUSER INTERFERENCE CANCELLER TIE LOK TIING (B Eng (Hons.), National University of Singapore) A THESIS ... throughout the rest of the thesis Chapter gives the principles of the wireless CDMA transmitter and receiver Furthermore, the RAKE receiver and the...

Ngày tải lên : 09/10/2015, 11:18

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Báo cáo hóa học: "Research Article Comparison of Channel Estimation Protocols for Coherent AF Relaying Networks in the Presence of Additive Noise and LO Phase Noise Stefan Berger and Armin Wittneben" pptx

... decreasing SNRest than In this work, we investigated diﬀerent channel estimation protocols for two-hop AF relaying networks (single-user and multiuser) in the presence of additive estimation noise and ... Networking their respective gain factors In the following, we derive expressions for the channel estimates as a function of the actual channel...

Ngày tải lên : 21/06/2014, 17:20

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Báo cáo hóa học: " Research Article Performance Analysis of Blind Subspace-Based Signature Estimation Algorithms for DS-CDMA Systems with Unknown Correlated Noise" pptx

... Zarifi and A B Gershman, Performance analysis of subspace-based signature waveform estimation algorithms for DS-CDMA systems with unknown correlated noise,” in Proceedings of 6th IEEE Workshop on ... user signature vectors are orthogonal, the simplified versions of these expressions have been also obtained for the high SNR regime The effect of the correlated...

Ngày tải lên : 22/06/2014, 23:20

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Human resources for industrialization and modernization associated with the development of knowledge based economy in the province of thua thien hue at the present time

... resources for industrialization and modernization associated with the development of the knowledge- based economy in the Province of Thua Thien- Hue 5 Time: Studying human resources for industrialization ... associated with the development of knowledge- based economy in the province of Thua Thien Hue Actual situati...

Ngày tải lên : 22/07/2014, 18:29

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effectiveness of teaching grammar with the use of dictogloss for students of k37a maths class, at hanoi college of education = hiệu quả dạy ngữ pháp bằng phương pháp dictogloss cho sinh viên lớp sư phạm

... Dictogloss for Students of K37A Maths Class, at Hanoi College of Education: An Action Research Hiệu Dạy Ngữ pháp Phương pháp Dictogloss cho Sinh viên lớp Sư phạm Toán 37A, Trường Cao đẳng Sư phạm Hà ... entitled: Effectiveness of Teaching Grammar with the Use of Dictogloss for Students of K37A Maths Class, at...

Ngày tải lên : 02/03/2015, 14:30

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Báo cáo "Estimation on efficient of distribute channel allocation schemes for cellular network " ppt

... sub-optimum channel allocation CS uses the channels efficiently and reduces the need for channel reallocation due to interference CS is a good solution for TDMA/FDMA Flexible channel assignment schemes ... an augmented channel occupancy (ACO) matrix for channel assignment The ACO matrix contains all the local and vicinity information needed for the selection of a chan...

Ngày tải lên : 22/03/2014, 11:20

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Báo cáo hóa học: " Binary De Bruijn sequences for DS-CDMA systems: analysis and results" pptx

... adopting De Bruijn spreading codes from the subset F4, compared to OVSF sequences and ideal behavior, in the indoor test environment, downlink section De Bruijn De Bruijn OVSF OVSF Ideal Ideal De Bruijn ... adopting De Bruijn spreading codes from the subset F8, compared to Gold sequences and ideal behavior, in the indoor test environment, uplink section De Bruij...

Ngày tải lên : 21/06/2014, 03:20

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Báo cáo hóa học: "Research Article A Fast LMMSE Channel Estimation Method for OFDM Systems" ppt

... comb-type pilot arrangement is adopted, and we assume that the channel remains stationary within one OFDM symbol, and therefore there is no ICI eﬀect We propose a fast LMMSE channel estimation method ... conventional LMMSE method cannot track the channel Once the channel parameters change, the performance of the conventional LMMSE method will degrade due to the par...

Ngày tải lên : 21/06/2014, 22:20

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Báo cáo hóa học: " Research Article A Low-Complexity LMMSE Channel Estimation Method for OFDM-Based Cooperative Diversity Systems with Multiple Amplify-and-Forward Relays" docx

... system with multiple AF relays CONCLUSIONS In this paper, a training-sequences-aided LMMSE channel estimation method has been proposed for OFDM-based cooperative diversity systems with multiple AF ... propose a training-sequences-aided LMMSE channel estimation method for OFDM-based cooperative diversity systems with multiple AF relays over f...

Ngày tải lên : 22/06/2014, 00:20

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Báo cáo hóa học: " Research Article Performance of a Two-Level Call Admission Control Scheme for DS-CDMA Wireless Networks" potx

... The above observation and explanation also apply to the call blocking performance for class calls, which is shown in Figure A comparison of the call blocking performance of class and class calls ... objective of the analysis is to study the performance of a two-level call admission control that assigns priority of resource access to class calls, reserves band...

Ngày tải lên : 22/06/2014, 19:20

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Báo cáo hóa học: " Two-Stage Maximum Likelihood Estimation (TSMLE) for MT-CDMA Signals in the Indoor Environment" doc

... with the increase in the MT symbol duration) that results from the increase in the number of tones, the performance gain starts to saturate In the practical setting, in increasing the number of tones, ... encountered as the number of tones increases This can be explained in the following way With the increase in the number of tones, the transmitted symbol d...

Ngày tải lên : 22/06/2014, 23:20

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Báo cáo hóa học: " Subband Adaptive Array for DS-CDMA Mobile Radio" docx

... broadband beamformers such as tapped delay line adaptive array (TDLAA) [13] Moreover, compared with conventional adaptive arrays perform- ing only spatial processing (narrow-band beamformers), the ... Therefore, SBAA can be considered a prospective candidate for spatial-temporal processing In this paper, we propose a novel scheme of adaptive array for direct-sequence CDMA (DS-CD...

Ngày tải lên : 23/06/2014, 01:20

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Báo cáo hóa học: " EM-Based Channel Estimation Algorithms for OFDM " docx

... error in the noise variance estimate will degrade channel estimation accuracy We performed such a EM-Based Channel Estimation Algorithms for OFDM 1469 35 100 30 10−1 20 BER Iterations 25 15 10−2 ... design and performance analysis, including equalization, channel estimation, synchronization, and peak-to-average power ratio reduction EM-Based Channel Estimation Algori...

Ngày tải lên : 23/06/2014, 01:20

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Numerical estimation schemes for quantum tomography

... Numerical Estimation Schemes for Quantum Tomography A survey of novel numerical techniques for quantum estimation Teo Yong Siah National University ... in quantum state estimation, for incomplete quantum process estimation based on the combined principles of maximum-likelihood and maximum-entropy, to yield a unique estimator for an unknown quantum ... Chapter...

Ngày tải lên : 09/09/2015, 17:55

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Báo cáo khoa học: "A Part of Speech Estimation Method for Japanese Unknown Words using a Statistical Model of Morphology and Context" pptx

... kanji katakana katakana-kanji kanji-hiragana hiragana kanji-katakana kat akana-symbol-katakana number kanji-hiragana-kanji alphabet kanji-hir agana-kanji-hir agana hiragana-kanji percent 45.1% 11.4% ... speech Table shows examples of common charto Chinese characters Hiragana and katakana are acter bigrams for each part of speech in the infresyllabaries: The former is used primar...

Ngày tải lên : 23/03/2014, 19:20

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