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

... 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

... 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

... 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

... 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

... 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

... 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

... 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

... 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

... 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

... 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

... 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

... 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

... 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

... 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