Turbo-Detected Unequal Protection MPEG-4 Audio Transceiver Using Convolutional Codes, Trellis Coded Modulation and Space-Time Trellis Coding

A jointly optimised turbo transceiver capable of providing unequal error protection is proposed for employment in an MPEG-4 aided audio transceiver. The transceiver advocated consists of Space-Time Trellis Coding (STTC), Trellis Coded Modulation (TCM) and two different-rate Non-Systematic Convolutional codes (NSCs) used for unequal error protection. A benchmarker scheme combining STTC and a single-class protection NSC is used for comparison with the proposed scheme. The audio performance of the both schemes is evaluated when communicating over uncorrelated Rayleigh fading channels. It was found that the proposed unequal protection turbo-transceiver scheme requires about two dBs lower transmit power than the single-class turbo benchmarker scheme in the context of the MPEG-4 audio transceiver, when aiming for an effective throughput of 2 bits/symbol, while exhibiting a similar decoding complexity

Turbo-detected unequal protection audio and speech transceivers using serially concatenated convolutional codes, trellis coded modulation and space-time trellis coding

The MPEG-4 TwinVQ audio codec and the AMR-WB speech codec are investigated in the context of a jointly optimised turbo transceiver capable of providing unequal error protection. The transceiver advocated consists of serially concatenated Space-Time Trellis Coding (STTC), Trellis Coded Modulation (TCM) and two different-rate Non-Systematic Convolutional codes (NSCs) used for unequal error protection. A benchmarker scheme combining STTC and a single-class protection NSC is used for comparison with the proposed scheme. The audio and speech performance of both schemes is evaluated, when communicating over uncorrelated Rayleigh fading channels. An $E_b/N_0$ value of about 2.5 (3.5)~dB is required for near-unimpaired audio (speech) transmission, which is about 3.07 (4.2)~dB from the capacity of the system

Turbo-Detected Unequal Error Protection Irregular Convolutional Codes Designed for the Wideband Advanced Multirate Speech Codec

Abstract—since the different bits of multimedia information, such as speech and video, have different error sensitivity, efficient unequalprotection channel coding schemes have to be used to ensure that the perceptually more important bits benefit from more powerful protection. Furthermore, in the context of turbo detection the channel codes should also match the characteristics of the channel for the sake of attaining a good convergence performance. In this paper, we address this design dilemma by using irregular convolutional codes (IRCCs) which constitute a family of different-rate subcodes. we benefit from the high design flexibility of IRCCs and hence excellent convergence properties are maintained while having unequal error protection capabilities matched to the requirements of the source. An EXIT chart based design procedure is proposed and used in the context of protecting the different-sensitivity speech bits of the wideband AMR speech codec. As a benefit, the unequalprotection system using IRCCs exhibits an SNR advantage of about 0.4dB over the equal-protection system employing regular convolutional codes, when communicating over a Gaussian channel

Foolproof quick-release locking pin

Locking pin can be withdrawn only when stress on the joint is negligible. Pin consists of a forward-pointing sleeve, a spring-loaded sliding handle, and a sliding plunger. Plunger movement controls installation and withdrawal of pin

Analisis Pelaksanaan Bauran Promosi pada PT Jalur Nugraha Eka Kurir (Jne) Pekanbaru

The marketing strategy includes products/services, promotion, pricing and place. Promotion as one of the factors that may affect the interests of consumers, consisting of several alternative strategies, namely publicity, advertising, sales promotion and personal selling . PT . JNE has implemented a variety of ways with the publicity and promotion of personal selling to increase sales of services such as employee uniforms in order to make the company better known by the public. Other promotional strategy is to make the sticker affixed to the truck freight cars, put stickers on cargo ships, etc. This study aims to determine the promotional mix strategies of PT Jalurnugraha Eka Courier (JNE) Pekanbaru.The population of this research are the user of PT JNE Pekanbaru as many as 78 120 people . To take the sample is use the Slovin model, samples taken are 100 people with accidental sampling method . The data analysis using descriptive methods .The results showed that the promotion mix in PT JNE can be categorized Less Precise because of the 4 promotional mix that applied in the company, only publicity that has been applied correctly. Personal selling, of the three indicators used , no single indicator is applied properly by the company , so the personal selling in PT JNE Branch categorized Inappropriate. Publicity, of the three indicators used only two indicators were applied properly by the company, so the company implemented publicity Less Precise. Advertising , of the three indicators used , there is only one indicator that is applied with proper promotion through the internet. It concluded that the company implement inappropriate advertising. Sales promotion, of the three indicators used, none of the indicators were applied properly by the company, it means that sales promotion is Not Properly applied by the company

Strategi Diferensiasi Produk dalam Menghadapi Persaingan Kuliner (Kasus Bisnis Sop Tunjang Tampan di Pekanbaru)

This study was conducted at the First Tunjang Sop located on Jl . Cinnamon Pekanbaru Riau , which is a company engaged in the trade . The purpose of this study was to determine the strategy of product differentiation in the face of the culinary competition in business tunjang perjama pekanbaru soup . The research methods include the location of the research conducted on the first attempt tunjang pekanbaru soup , types and sources of data used is primary data , where the data is obtained directly from the company include product differentiation strategy that made the first attempt tunjang pekanbaru culinary soup and secondary data is data annual obtained from the companys other sales data from the years 2008-2012 , and a general overview of the company , while the analysis of the data using the method of analyzing the data in this study would be conducted degan qualitative descriptive method .Based on the results of research on product differentiation strategy in the face of the culinary competition in the business case tunjang Handsome soup can be seen that most of the respondents to respond well enough that as many as 21 people , or 52.50 % , then the respondents who gave a good response ditangggapi many as 8 or 20 , 00 % and to respond less well addressed as many as 11 people or 27.50 %The obstacles in the face of the product differentiation strategy culinary competition among others : That the lack of parking, lack of ability of the company to maintain a corporate image , a lack of desire and willingness to further develop its business enterpriseFrom these results , the actual product being supported first Handsome culinary soup is considered to be able to compete , but business owners should still consider the quality of marketed products , as well as looking for new innovations . This is done so that businesses can compete soup first SOP tunjang To nex time .Key word : Product, differentiation, marketing strategy,business competitio

Analisis Strategi Diferensiasi (Kasus Produk Telkom Speedy di Plasa Telkom Pekanbaru)

This research took place in The Plasa Telkom Pekanbaru. This research based on the amount of market opportunities to telecommunications services (internet) in Riau. These conditions provide an opportunity and also threat to telecommunications service provider (internet) business that targeting the same market, that effected competition conditions being increased intensely. These condition forced The Plasa Telkom Pekanbaru to designing and implementing an appropriate and efficient differentiation strategy to attract and retain customers. This study aims to analyze the differentiation strategy implemented of The Plasa Telkom Pekanbaru and constraints experienced in the face of telecommunications services in Riau.The Author used descriptive quantitative analysis method, Used questionnaire and interview to collecting data, and used accidental sampling as sample. Source of data was used primary data or obtained directly from the object of research data, and secondary data is data which Author collected from The Plasa Telkom Pekanbaru.The results of this research indicate that the differentiation strategy that has been implemented by The Plasa Telkom Pekanbaru is appropriate, but the strategy style of Speedys product must be considered and improved.Keywords: Differentiation strategy, telecommunication services, Telkoms product

Analisis Pelaksanaan Promosi Produk Beton Siap Pakai pada PT. Mitra Beton Mandiri Pekanbaru

Our is one of the elements from mix marketing (markeing mixed), besidethe determination selling, product, and distribution. Our very influential tocompany to achieve a maximum sales volume, because even though productsoffered is great, relatively cheap and easy to get, if not accompanied by our good,then the level sales would not suffice. Because the number of companies areengaged in that period, the company should be careful in order to carry out ourproducts concrete ready-to-use PT. Mitra Beton Mandiri Pekanbaru.Number of sample as many as 29 people, where population is used as amodel. The reason the taking of population as samples or use techniques censuselement because the population is relatively low. Results of research proceduresproduct promotion concrete ready to be used in PT. Mitra Beton MandiriPekanbaru in this advertising, sales private, publicity, our sales have done withgood.Key words : Promotion, the product Concrete ready-to-use, PT Mitra BetonMandiri Pekanbar

Implementation Analysis Of Service Quality In Business Package Delivery Services (Case PT. Indah Logistic Cabang Pekanbaru)

At this time the service is needed in services once by the community. For the provision of services in the field of services need to be improved so that the community as a customer service users were satisfied with the service provided. PT. Indah Logistic cabang Pekanbaru is engaged in the business of shipping services or goods.The research was conducted at PT. Indah Logistic cabang Pekanbaru. The problem formulation is How Quality Service at PT Indah Logistic cabang Pekanbaru? This study aims to determine the Quality of Service at PT. Indah Logistic cabang Pekanbaru and to determine the barriers faced by PT. Indah Logistic cabang Pekanbaru in Service Quality. In line with this research, the quality of service with a number of the respondents were 97 customers. This study uses quantitative analysis method using the theory put forward by some members about the quality of services. In this study researchers using indicators namely Utilization, Reliability, Responsiveness, Assurance, and Emphaty as a measure of the Quality of Service at PT. Indah Logistic cabang Pekanbaru. Technique used data collection with interviews and kuisioner ie, sampling techniques for Accidental Sampling. Shared data source that is divided into two primary data source is the source of information obtained through kuisioner, interviews with informants and secondary data obtained through the documents available in PT. Indah Logistic cabang Pekanbaru. From the research results obtained can be seen that the Quality of Service of PT. Indah Logistic cabang Pekanbaru categorized good arm.Keywords : Quality of Service, Tangible, Reliability, Responsiveness,Assurances and Emphat