Essays about: "mimo codes"

Showing result 1 - 5 of 10 essays containing the words mimo codes.

1. 1. Performance Analysis of STTC-Based MIMO Under Cognitive RadioScenarios

   University essay from Blekinge Tekniska Högskola/Institutionen för datavetenskap

   Author : Sanjana Kankantee; Sai Praneeth Reddy Ganta; [2023]
   Keywords : Space-time trellis coding; MIMO; Cognitive radio; Performance; Bit error rate; Diversity; AWGN; Rayleigh fading; Detection; Spectrum.;

   Abstract : This thesis presents a comprehensive investigation into improving wireless transmission rates and reliability through the implementation of Space Time Trellis Codes(STTC). The study focuses on enhancing the coding gain, diversity gain, and flexible transmission capabilities, which are crucial for Error-Correcting Codes (ECC)in wireless communications. READ MORE

3. 2. Waveform agility for robust radar detection and jamming mitigation

   University essay from Uppsala universitet/Fasta tillståndets elektronik

   Author : Karl-Johan Hällgren; [2021]
   Keywords : radar; electronic warfare; jamming; jamming resistance; waveforms; phase codes; MIMO; radar; telekrig; störning; störskydd; vågformer; faskoder; MIMO;

   Abstract : In this report metrics for jamming resistance and radar performance of waveform sets are described and developed, and different sets of waveforms are optimized, evaluated and compared. It is shown that without additional processing or PRI jitter, waveform sets can reach jamming resistance a few dB worse than what is provided by PRI jitter alone, and together with PRI jitter a few dB better. READ MORE

4. 3. Performance Analysis of a MIMO Cognitive Cooperative Radio Network with Multiple AF Relays

   University essay from Blekinge Tekniska Högskola/Institutionen för tillämpad signalbehandling

   Author : Advaita Advaita; Mani Meghala Gali; [2016]
   Keywords : Cognitive radio; Cooperative communications; Space time coding; MIMO systems; Outage probability;

   Abstract : With the rapid growth of wireless communications, the demand for the various multimedia services is increasing day by day leading to a deficit in the frequency spectrum resources. To overcome this problem, the concept of cognitive radio technology has been proposed which allows the unlicensed secondary user (SU) to access the licensed spectrum of the primary user (PU), thus improving the spectrum utilization. READ MORE

5. 4. Robust MIMO Precoding on Real-World Measured Channels

   University essay from KTH/Signalbehandling

   Author : Filip Hedenskog; [2015]
   Keywords : MIMO; maximin; imperfect CSIT; real-world measured channels; uncertainty set; worst-case robustness;

   Abstract : It is well known that multi-input multi-output (MIMO) wireless communication systemsthat employ precoding techniques are capable of meeting the high expectations of modernand future wireless communication standards. In order to fully utilize these techniques, thecommunication system typically requires information of the channel, commonly referred toas channel state information (CSI). READ MORE

6. 5. Performance Analysis of Decode and Forward Relaying with Keyhole in Nakagami-m Fading Channels

   University essay from Blekinge Tekniska Högskola/Institutionen för datalogi och datorsystemteknik

   Author : pawan khadka; [2012]
   Keywords : decode and forward; orthogonal space time block codes; Nakagami-m fading; keyhole effects; symbol error rate; moment generating function; fading severity parameter;

   Abstract : Fading has always been a major obstacle in the effective transmission of signals from the transmit antenna to the receive antenna. The innovation of multiple-input multiple-output (MIMO) system has led to the regression of the adverse effect of these fading entities and thus provided a higher data rate communication while maintaining the quality of service (QoS). READ MORE