Signal Code Modulation for Broadband Wireless Systems
Anubhuti Khare1, Manish Saxena2, Pravin J Chaudhari3
1Dr. Anubhuti Khare, Reader, Department of Electronics and Communication, University Institute of Technology, Rajeev Gandhi Technical University, Bhopal, (M.P.), India.
2Manish Saxena, Head of Electronics and Communication Department, Bansal Institute of Science and Technology Bhopal (M.P.), India.
3Pravin J Chaudhari, Mtech (Digital Communication), Bansal Institute of Science and Technology Bhopal (M.P.), India.
Manuscript received on October 06, 2011. | Revised Manuscript received on October 11, 2011. | Manuscript published on October 30, 2011 . | PP: 14-19 | Volume-1 Issue-1, October 2011. | Retrieval Number: A0098101111/2011©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: This paper seeks to present ways to eliminate the inherent quantization noise component in digital communications, instead of conventionally making it minimal. It deals with a new concept of signaling called the Signal Code Modulation (SCM) Technique. The primary analog signal is represented by: a sample which is quantized and encoded digitally, and an analog component, which is a function of the quantization component of the digital sample. The advantages of such a system are two sided offering advantages of both analog and digital signaling. The presence of the analog residual allows for the system performance to improve when excess channel SNR is available. The digital component provides increased SNR and makes it possible for coding to be employed to achieve near error-free transmission.
Keywords: SCM, Hybrid Modulation, Quantized residual amplification.