Fully Reused VLSI Architecture of FM0Manchester Encoding Using SOLS Technique for DSRC Applications
Abstract : The dedicated short-range communication (DSRC) is an emerging technique to push the intelligent transportation system into our daily life. The DSRC standards generally adopt FM0 and Manchester codes to reach dcbalance, enhancing the signal reliability. Nevertheless, the coding-diversity between the FM0 and Manchester codes seriously limits the potential to design a fully reused VLSI architecture for both. In this paper, the similarityoriented logic simplification (SOLS) technique is proposed to overcome this limitation. The SOLS technique improves the hardware utilization rate from 57.14% to 100% for both FM0 and Manchester encodings. The performance of this paper is evaluated on the post layout simulation in Taiwan Semiconductor Manufacturing Company (TSMC) 0.18-µm 1P6M CMOS technology. The maximum operation frequency is 2 GHz and 900 MHz for Manchester and FM0 encodings, respectively. The power consumption is 1.58 mW at 2 GHz for Manchester encoding and 1.14 mW at 900 MHz for FM0 encoding. The core circuit area is 65.98×30.43 µm2. The encoding capability of this paper can fully support the DSRC standards of America, Europe, and Japan. This paper not only develops a fully reused VLSI architecture, but also exhibits an efficient performance compared with the existing works.
? The code word structure of FM0 encoding and Manchester encoding are different, thus limiting the hardware potential of existing DSRC systems.
? This paper not only develops a fully reconfigured VLSI architecture, but also exhibits a competitive performance compared with the existing works.
? In existing works the coding diversity between the FM0 and Manchester encoders limits the potential to design a fully reconfigured VLSI architecture.
? Encoding is the process of translating bit stream into specified format in data communication. Encoding exist in physical layer of OSI layer.
? In vehicle-to-vehicle, the DSRC activated the message sending and broadcasting among vehicle for safety issues and public information announcement.
? The Safety issues consist of blind-spot, intersection warning, intercars distance, and collision-alarm.
? This architecture exhibits a drawback that the XOR is only dedicated for FM0 encoding, and is not shared with Manchester encoding.
? The final circuit obtained is an integrated architecture of FM0, Manchester and Miller encoding to overcoming various drawbacks of traditional method.
• In this paper a fully reused VLSI architecture of FM0/Manchester encoding technique for memory application has been proposed.
• In this paper, the similarity-oriented logic simplification (SOLS) technique is proposed to overcome this limitation.
• This paper adopts the proposed SOLS technique to construct a fully reused VLSI architecture for FM0, Manchester and Miller encodings.
• This paper proposes a VLSI architecture design using similarity oriented logic simplification (SOLS) technique.
• In this work, the new design of Manchester encoder using FPGA device is proposed to overcome common design problems and suitable to be implemented in IoT environment.
? This paper not only develops a fully reused VLSI architecture, but also exhibits a competitive performance compared with the existing works.
? The balance logic operation sharing efficiently combines FM0 and Manchester encodings with the identical logic components.
? This paper is realized in TSMC0.18-µm 1P6M CMOS technology with an outstanding device efficiency.
? The dedicated short-range communication is a technique for one- or twoway medium range communication especially used for intelligent transportation systems.
? In this paper two multiplexer is used in proposed work reduce two multiplexer from one multiplexer, when reduce the multiplexer the total components are reduced the area and then the power consumption also reduced.
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