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Design method of HARQ (Hybrid Automatic Repeat-request) communication way applied to SC-FDE (Signal Carrier Frequency-Domain Equalization) baseband system

A technology of SC-FDE and baseband system, applied in baseband system parts, transmission system, digital transmission system, etc., can solve the problem of increasing overhead

Inactive Publication Date: 2012-05-02
上海新微科技发展有限公司
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  • Abstract
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Problems solved by technology

However, HARQ also has its shortcomings: since the data sent at the sending end must have a certain error correction capability that is not available in ARQ, more parity bits are required, which increases the number of transmissions and even retransmissions each time. s expenses

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  • Design method of HARQ (Hybrid Automatic Repeat-request) communication way applied to SC-FDE (Signal Carrier Frequency-Domain Equalization) baseband system
  • Design method of HARQ (Hybrid Automatic Repeat-request) communication way applied to SC-FDE (Signal Carrier Frequency-Domain Equalization) baseband system
  • Design method of HARQ (Hybrid Automatic Repeat-request) communication way applied to SC-FDE (Signal Carrier Frequency-Domain Equalization) baseband system

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Embodiment Construction

[0018] The HARQ single-carrier frequency domain equalization baseband system achieves lower than the original system by retransmitting data information, changing the working mode of the "framing" part of the transmitter and the "unloading" part of the receiver, and combining equal gains. BER performance.

[0019]The framing part of the transmitter establishes two RAMs, which are called RAM I and RAM II respectively. When framing, the first two "1 pilot symbols + 8 data symbols" of the frame data are stored in RAM I. The latter two "1 pilot symbol + 8 data symbols" are stored in RAM II. In the same way, the unloading part of the receiving end also establishes two RAMs, namely RAMIII and RAMIV. When unloading the frame, the first two "1 pilot symbols + 8 data symbols" of the frame data are stored in RAMIII. Two "1 pilot symbol + 8 data symbols" are stored in RAMIV.

[0020] The purpose of setting RAMI~RAMIV here is to save a frame of information, so that it can be taken out wh...

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Abstract

The invention relates to a design method of an HARQ (Hybrid Automatic Repeat-request) communication way applied to SC-FDE (Signal Carrier Frequency-Domain Equalization) baseband system baseband system. The design method is characterized by comprising the following steps of: on the premise of a forward correction communication way of the common SC-FDE baseband system, analyzing defects of the system; then combining a technical principle related to the HARQ, taking a super-frame as a unit and transmitting data information of each frame into a signal channel decoding part of a receiving end to be judged; if finding that errors cannot be corrected, executing an instruction for repeatedly transmitting the data at the next moment; and otherwise, avoiding transmitting the data again and continually carrying out the transmission of the next frame. According to the invention, the design scheme of the system combining the SC-FDE and the HARQ technologies takes suitable reduction of a system throughput as the cost to obtain a lower error rate of the system, so that the received data become more accurate.

Description

technical field [0001] The present invention relates to a design scheme of the working principle of a single-carrier frequency equalization baseband system in a HARQ (Hybrid automatic repeat-request) communication mode; more precisely, the present invention relates to a single-carrier frequency A design method of the HARQ communication mode of the balanced (Single Carrier Frequency-Domain Equalization, SC-FDE) baseband system. Background technique [0002] The future communication system is a high-speed, large-capacity system. How to reliably transmit high-speed services under wireless fading channels poses a great challenge to wireless transmission link technology. This challenge makes people strive to develop efficient coding and modulation and Signal processing techniques to improve the efficiency of radio frequency usage. [0003] In terms of combating multipath fading, the basic transmission technologies can be divided into two categories: multi-carrier and single-carr...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04L1/00H04L25/03
Inventor 马天鸣施玉松李凤荣徐立洲高丹王营冠张唯易
Owner 上海新微科技发展有限公司
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