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Error detection is the important process to test the quality of the channel transmission. This design proposes a program which is based on pseudo-random m-sequence as the core of the error detection. By using m-sequence and cyclic prefix, an equivalent one-way OFDM channel transmission model is constructed, and using Matlab and the Quartus II software, simulation gives the result. Using Altera EP2C8Q208 chip to completing the function, achieve the purpose of the channel error detection. Simulation results show that, m-sequence as the test sequence could achieve the channel symbol error detection.