Performance Evaluation on Error Probabilities of Coded BPSK System Using the Linear (23, 12) Golay Code with Hard-Decision Decoding

Abdullah, Sharifah Sakeenah binti Syed; Khalifa, Othman O.; Rahman, Farah Abdul; Nasir, Haidawati

doi:10.1109/icsima47653.2019.9057337

Cited by 1 publication

(2 citation statements)

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“…This section elaborates simulation results for the proposed estimation algorithm's. The parameters used for the simulation are as follows: for spreading, Golay code has been used [26], [27] and the spreading sequence length is taken as L c = 8. The training sequence used in this work is similar as in [21], [22] for CPM burst with the length of training sequence given as L 0 = 64 symbols.…”

Section: Resultsmentioning

confidence: 99%

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A Robust Timing and Phase Offset Estimation Technique for CPM-DSSS-Based Secured Communication Link

Shehzadi¹,

Sheikh²,

Kulsoom

et al. 2021

IEEE Access

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Continuous Phase Modulation-Direct Sequence Spread Spectrum (CPM-DSSS) is a promising scheme for a secured Point-to-Point (P2P) communication system having Anti-Jamming (AJ) capabilities. However, like other communication systems, synchronization of CPM-DSSS based systems is required for reliable detection of data. This paper presents a novel algorithm for estimating the timing and phase offset for binary full-response CPM-DSSS based systems. A burst mode transmission is considered, here, and within each burst, a training sequence is embedded along with data. Firstly, the entire burst is spread using DSSS and then modulated with CPM, which is later upconverted and passed on to the channel. After down-conversion at the receiver, the proposed algorithm estimates timing and phase offset from the received spread training sequence. Then estimation accuracy of the proposed algorithm is compared with the state-of-the-art. The results indicate that the proposed joint estimator is superior by 9 dB and 10 dB for the estimation of timing and phase offset, respectively, as compared to the existing algorithm. Furthermore, the estimator's variance for three different frequency pulses is compared with Modified Cramer-Rao Bound (MCRB). The results show that the phase offset estimator's variance approaches MCRB for all Signal-to-Noise Ratios (SNRs). The effectiveness of the proposed algorithm in the multipath fading channel is also demonstrated.

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Section: Resultsmentioning

confidence: 99%

“…Then, each symbol in the burst is mapped to chips called d i using the direct sequence spreading by employing Golay complementary sequence [26], [27] of the length L c = 8 so that each bit per symbol interval T s can be transmitted. After spreading of whole burst, the length of spread training sequence is represented as…”

Section: The System Modelmentioning

confidence: 99%